ProspectusMay 1, 2011(as revised May 16, 2011)

	Class A	Class C
ASG Diversifying Strategies Fund	DSFAX	DSFCX
ASG Global Alternatives Fund	GAFAX	GAFCX
ASG Managed Futures Strategy Fund	AMFAX	ASFCX
Gateway Fund	GATEX	GTECX
Loomis Sayles Absolute Strategies Fund	LABAX	LABCX
Loomis Sayles Multi-Asset Real Return Fund	MARAX	MARCX

The Securities and Exchange Commission has not approved or disapproved any Fund’s shares or determined whether this prospectus is truthful or complete. Any representation to the contrary is a crime.

Table of Contents

Fund Summary	1
ASG Diversifying Strategies Fund	1
ASG Global Alternatives Fund	7
ASG Managed Futures Strategy Fund	13
Gateway Fund	18
Loomis Sayles Absolute Strategies Fund	22
Loomis Sayles Multi-Asset Real Return Fund	27
Investment Goals, Strategies and Risks	33
More Information About the Funds	33
ASG Diversifying Strategies Fund	33
ASG Global Alternatives Fund	38
ASG Managed Futures Strategy Fund	43
Gateway Fund	48
Loomis Sayles Absolute Strategies Fund	51
Loomis Sayles Multi-Asset Real Return Fund	56
Management Team	62
Meet the Funds’ Investment Advisers and Subadviser	62
Meet the Funds’ Portfolio Managers	63
Fund Services	65
Investing in the Funds	65
How Sales Charges Are Calculated	66
Compensation to Securities Dealers	68
It’s Easy to Open an Account	69
Buying Shares	70
Selling Shares	71
Selling Shares in Writing	72
Exchanging Shares	72
Restrictions on Buying, Selling and Exchanging Shares	73
How Fund Shares Are Priced	74
Dividends and Distributions	75
Tax Consequences	76
Additional Investor Services	77
Financial Performance	78
Glossary of Terms	85
Fund shares are not bank deposits and are not guaranteed, endorsed or insured by the Federal Deposit Insurance Corporation or any other government agency, and are subject to investment risks, including possible loss of the principal invested.

Fund Summary

ASG Diversifying Strategies Fund

Investment GoalThe Fund pursues an absolute return strategy that seeks to provide capital appreciation. The secondary goal of the Fund is to achieve these returns while maintaining a low or negative correlation over time with the returns of major equity indices.Fund Fees & Expenses The following table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Natixis Fund Complex. More information about these and other discounts is available from your financial professional and in the section “How Sales Charges Are Calculated” on page 66 of the Prospectus and on page 99 in the section “Reduced Sales Charges” of the Statement of Additional Information (“SAI”).

Shareholder Fees(fees paid directly from your investment)	Class A	Class C
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	5.75%	None
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, as applicable)	None	1.00%
Redemption fees	None	None

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)	Class A	Class C
Management fees	1.25%	1.25%
Distribution and/or service (12b-1) fees	0.25%	1.00%
Other expenses (restated to reflect current expenses)	0.55%	0.55%
Total annual fund operating expenses	2.05%	2.80%
Fee waiver and/or expense reimbursement1	0.31%	0.31%
Total annual fund operating expenses after fee waiver and/or expense reimbursement	1.74%	2.49%

ExampleThis example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first year and on the Total Annual Fund Operating Expenses for the remaining years. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	Class A	Class C
		If shares are redeemed	If shares are not redeemed
1 year	$742	$352	$252
3 years	$1,153	$839	$839
5 years	$1,588	$1,452	$1,452
10 years	$2,794	$3,106	$3,106

1 AlphaSimplex Group, LLC (the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.70% and 2.45% of the Fund’s average daily net assets for Class A and C shares, respectively, exclusive of organizational expenses, brokerage expenses, interest expense, taxes and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 1.70% and 2.45% of the Fund’s average daily net assets for Class A and C shares, respectively. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

1

Fund Summary Portfolio TurnoverThe Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. Due to the short-term nature of the Fund’s investment portfolio, the Fund does not calculate a portfolio turnover rate. The Fund’s trading in derivatives is active and frequent. Active and frequent trading of derivatives, like active and frequent trading of securities, will result in transaction costs which reduce fund returns.Investments, Risks and PerformancePrincipal Investment Strategies The Fund seeks to generate positive absolute returns over time rather than track the performance of any particular index. In selecting investments for the Fund, the Adviser uses multiple quantitative investment models and strategies each of which has an absolute return objective. Each model and strategy may involve a broad range of market exposures. These models may include, for example, models that base investment decisions on fixed income spreads and models which seek to identify trends across various asset classes. The Adviser uses quantitative and qualitative judgments in the determination of weighting among the models and strategies. Although the Fund seeks positive absolute returns over time, it is likely that the Fund’s investment returns may be volatile over short periods of time. The Fund may outperform the overall securities market during periods of flat or negative market performance and may underperform during periods of strong market performance. There can be no assurance that the Fund’s returns over time or during any period will be positive or that the Fund will outperform the overall security markets over time or during any particular period.Under normal market conditions, the Adviser typically will make extensive use of a variety of derivative instruments, in particular futures and forward contracts, to capture the exposures suggested by its absolute return strategies while also adding value through volatility management and correlation management. These market exposures, which are expected to change over time, may include, for example, exposures to the returns of equity and fixed income securities, currencies and commodities. The Adviser will scale the notional exposure of the Fund’s futures and currency forward positions with the objective of targeting a relatively stable level of annualized volatility for the Fund’s overall portfolio. The Adviser may also use exchange-traded futures contracts on broad U.S. or international equity indices to decrease any undesired correlation with the returns of the major equity indices. The Adviser will have great flexibility to allocate the Fund’s derivatives exposure among various securities, indices, currencies, commodities and other instruments, and the amount of the Fund’s assets that may be allocated to derivative strategies and among these various instruments is expected to vary over time.Under normal market conditions, it is expected that no more than 25% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to the Fund’s derivative transactions. The notional value of the Fund’s derivative investments, however, will generally exceed 25% of the Fund’s total assets. The Fund expects that under normal market conditions it will invest at least 75% of its total assets in money market and other short-term, high quality securities (the “Money Market Portion”) managed by Reich & Tang Asset Management, LLC (the “Subadviser”), although the Fund may invest less than this percentage. The assets allocated to the Money Market Portion will be used primarily to support the Fund’s investments in derivatives and similar instruments and, secondarily, to provide the Fund with incremental income and liquidity. Although the Fund will invest a significant portion of its assets in money market instruments, the Fund is not a “money market” fund and the value of the Money Market Portion as well as the value of the Fund’s shares may decrease.Although the Fund does not intend to invest in physical commodities directly, the Fund expects to obtain investment exposure to commodity-related derivatives through a wholly-owned subsidiary organized under the laws of the Cayman Islands that will make commodity-related investments (the “Commodity Subsidiary”). Under normal market conditions, no more than 10% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to these transactions.The Fund will concentrate its investments in the financial services industry, which means it will normally invest at least 25% of its total assets in securities and other obligations (for example, bank certificates of deposit) of issuers in such industry.The Fund may engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance.The percentage limitations set forth in this Fund summary are not investment restrictions and the Fund may exceed these limits from time to time.Principal RisksThe principal risks of investing in the Fund are summarized below. The Fund does not represent a complete investment program. You may lose money by investing in the Fund.

2

Fund Summary Allocation and Correlation Risk: This is the risk that the Adviser’s judgments about, and allocations between, asset classes and market exposures may adversely affect the Fund’s performance. This risk can be increased by the use of derivatives to increase allocations to various market exposures. This is because derivatives can create investment leverage, which will magnify the impact to the Fund of its investment in any underperforming market exposure.Commodity Risk: This is the risk that exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of physical commodities or commodity-linked derivative instruments may be affected by changes in overall market movements, commodity price volatility, changes in interest rates, currency fluctuations, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund.
Commodity Subsidiary Risk: Investing in the Commodity Subsidiary will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments, such as commodity investments risk. The Commodity Subsidiary is not registered under the Investment Company Act of 1940 (the “1940 Act”) and is not subject to all of the investor protections of the 1940 Act. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its shareholders.Concentrated Investment Risk: The Fund is particularly vulnerable to events affecting companies in the financial services industry because the Fund concentrates its investments in securities and other obligations of issuers in such industry. Examples of risks affecting the financial services industry include changes in governmental regulation, issues relating to the availability and cost of capital, changes in interest rates and/or monetary policy and price competition. In addition, financial services companies are often more highly leveraged than other companies, making them inherently riskier. As a result, the Fund’s shares may rise and fall in value more rapidly and to a greater extent than shares of a fund that does not concentrate or focus in a particular industry or economic sector. The financial services industry has recently experienced high volatility and a number of issuer failures and the value of many of these securities has significantly declined. As a result, the risk associated with investing in the Fund may be increased as compared to a fund that does not concentrate in the financial services industry.Credit/Counterparty Risk: Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with over-the-counter (“OTC”) derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.Currency Risk: Fluctuations in the exchange rates between the different currencies may negatively affect an investment. The Fund may hedge its exposure to foreign currencies and may invest in foreign currencies as an asset class.Derivatives Risk: Derivatives are subject to changes in the value of the underlying asset or indices on which such transactions are based. There is no guarantee that the use of derivatives will be effective or that suitable transactions will be available. Even a small investment in derivatives may give rise to leverage risk and can have a significant impact on the Fund’s exposure to securities markets values, interest rates or currency exchange rates. It is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. The use of derivatives for other than hedging purposes may be considered a speculative activity, and involves greater risks than are involved in hedging. The Fund’s use of derivatives, such as futures, forward contracts, foreign currency transactions and commodity-linked derivatives involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward contracts and other OTC derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices, liquidity risk, allocation risk and the risk of losing more than the initial margin required to initiate derivatives positions. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. There can be no assurance that the Fund’s derivative counterparties will not experience financial difficulties, possibly resulting in losses to the Fund.Equity Securities Risk: The value of the Fund’s investments in equity securities could be subject to unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock.

3

Fund Summary Foreign Securities Risk: The Fund’s investments in foreign securities are subject to foreign currency fluctuations. Foreign securities may be subject to higher volatility than U.S. securities, varying degrees of regulation and limited liquidity. Investments in foreign securities may be subject to greater political, economic, environmental, credit and information risks.Interest Rate Risk: Changes in interest rates may cause the value of the Fund’s investments to decrease. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment.Issuer Risk: The value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.Leverage Risk: This is the risk associated with securities or practices (e.g., borrowing and the use of certain derivatives) and investment in certain types of derivatives that multiply small index or market movements into larger changes in value. Use of derivative instruments may involve leverage. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. Futures and forward currency contracts are derivatives and may be subject to this type of risk.Liquidity Risk: Liquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Illiquid investments also may be difficult to value.Management Risk: A strategy used by the Fund’s portfolio managers may fail to produce the intended result. The Adviser utilizes various proprietary quantitative models to identify investment opportunities. There is a possibility that one or all of the quantitative models may fail to identify profitable opportunities at any time. Furthermore, they may incorrectly identify opportunities and these misidentified opportunities may lead to substantial losses.Market Risk: The market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions. The Fund’s portfolio managers will attempt to reduce this risk by implementing various volatility management strategies and techniques. However, there is no guarantee that such strategies and techniques will produce the intended result.U.S. Government Securities Risk: Investments in certain U.S. government securities may not be supported by the full faith and credit of the U.S. government. Accordingly, no assurance can be given that the U.S. government will provide financial support to U.S. government agencies, instrumentalities or sponsored enterprises if it is not obligated to do so by law. The maximum potential liability of the issuers of some U.S. government securities held by the Fund may greatly exceed their current resources, and it is possible that these issuers will not have the funds to meet their payment obligations in the future. In such a case, the Fund would have to look principally to the agency, instrumentality or sponsored enterprise issuing or guaranteeing the security for ultimate repayment, and the Fund may not be able to assert a claim against the U.S. government itself in the event the agency, instrumentality or sponsored enterprise does not meet its commitment. Concerns about the capacity of the U.S. government to meet its obligations may raise the interest rates payable on its securities, negatively impacting the price of such securities already held by the Fund.Valuation Risk: This is the risk that the Fund has valued certain securities at a higher price than the price at which they can be sold. This risk may be especially pronounced for investments, such as derivatives, which may be illiquid or which may become illiquid.Risk/Return Bar Chart and TableThe bar chart and table shown below provide some indication of the risks of investing in the Fund by showing the Fund’s performance in the first full year and by showing how the Fund’s average annual returns for the one-year and life-of-fund periods compare with those of a broad measure of market performance. The Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information is available online at ga.natixis.com and/or by calling the Fund toll-free at 800-225-5478.The bar chart does not reflect any sales charge that you may be required to pay when you buy or redeem the Fund’s shares. A sales charge will reduce your return.

4

Fund Summary Total Returns for Class A

	Highest Quarterly Return: Third Quarter 2010, 13.89%
	Lowest Quarterly Return: Fourth Quarter 2010, -4.18%

Average Annual Total Returns (for the periods ended December 31, 2010)	Past 1 Year	Life of Fund (8/3/09)
ASG Diversifying Strategies Fund Class A – Return Before Taxes	2.24%	6.74%
Return After Taxes on Distributions	0.58%	4.44%
Return After Taxes on Distributions & Sales of Fund Shares	1.74%	4.59%
Class C – Return Before Taxes	6.58%	10.41%
HFRI Fund of Funds Composite Index (Calculated from August 1, 2009)	5.46%	7.00%

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans, qualified plans, education savings accounts, such as 529 plans, or individual retirement accounts. The after-tax returns are shown for only one class of the Fund. After-tax returns for the other classes of the Fund will vary. Index performance reflects no deduction for fees, expenses or taxes.ManagementInvestment Adviser AlphaSimplex Group, LLCInvestment SubadviserReich & Tang Asset Management, LLCPortfolio ManagersAndrew W. Lo, Chief Investment Strategist of the Adviser, has served as co-portfolio manager of the Fund since August 2009.Jeremiah H. Chafkin, President of the Adviser, has served as co-portfolio manager of the Fund since August 2009.Philippe P. Lüdi, Vice President of the Adviser, has served as co-portfolio manager of the Fund since May 2010.Robert S. Rickard, Senior Vice President and head of Portfolio Management and Trading of the Subadviser, has served as co-portfolio manager of the Fund since August 2009.

5

Fund Summary Purchase and Sale of Fund SharesThe following chart shows the investment minimums for various types of accounts:

Type of Account	Minimum Initial Purchase	Minimum Subsequent Purchase
Any account other than those listed below	$2,500	$100
For shareholders participating in Natixis Funds’ Investment Builder Program	$1,000	$50
For Traditional IRA, Roth IRA, Rollover IRA, SEP-IRA and Keogh plans using the Natixis Funds’ prototype document (direct accounts, not held through intermediary)	$1,000	$100
Coverdell Education Savings Accounts	$500	$100

The Fund’s shares are available for purchase (and are redeemable on any business day) through your investment dealer, directly from the Fund by writing to the Fund at Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, by exchange, by wire, by internet at ga.natixis.com, through the Automated Clearing House system, or, in the case of redemptions, by telephone at 800-225-5478 or by the Systematic Withdrawal Plan.Tax InformationFund distributions are generally taxable to you as ordinary income or capital gain, except for distributions to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax law generally.Payments to Broker-Dealers and Other Financial IntermediariesIf you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of the Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

6

Fund Summary

ASG Global Alternatives Fund

Investment GoalThe Fund pursues an absolute return strategy that seeks to provide capital appreciation consistent with the risk-return characteristics of a diversified portfolio of hedge funds. The secondary goal of the Fund is to achieve these returns with less volatility than major equity indices.Fund Fees & Expenses The following table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Natixis Fund Complex. More information about these and other discounts is available from your financial professional and in the section “How Sales Charges Are Calculated” on page 66 of the Prospectus and on page 99 in the section “Reduced Sales Charges” of the Statement of Additional Information (“SAI”).

Shareholder Fees(fees paid directly from your investment)	Class A	Class C
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	5.75%	None
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, as applicable)	None	1.00%
Redemption fees	None	None

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)	Class A	Class C
Management fees	1.15%	1.15%
Distribution and/or service (12b-1) fees	0.25%	1.00%
Other expenses	0.27%	0.27%
Total annual fund operating expenses	1.67%	2.42%
Fee waiver and/or expense reimbursement1	0.06%	0.06%
Total annual fund operating expenses after fee waiver and/or expense reimbursement	1.61%	2.36%

ExampleThis example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first year and on the Total Annual Fund Operating Expenses for the remaining years. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	Class A	Class C
		If shares are redeemed	If shares are not redeemed
1 year	$729	$339	$239
3 years	$1,066	$749	$749
5 years	$1,425	$1,285	$1,285
10 years	$2,433	$2,752	$2,752

1 AlphaSimplex Group, LLC (the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.60% and 2.35% of the Fund’s average daily net assets for Class A and C shares, respectively, exclusive of organizational expenses, brokerage expenses, interest expense, taxes and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 1.60% and 2.35% of the Fund’s average daily net assets for Class A and C shares, respectively. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

7

Fund Summary Portfolio TurnoverThe Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. Due to the short-term nature of the Fund’s investment portfolio, the Fund does not calculate a portfolio turnover rate. The Fund’s trading in derivatives is active and frequent. Active and frequent trading of derivatives, like active and frequent trading of securities, will result in transaction costs which reduce fund returns.Investments, Risks and PerformancePrincipal Investment StrategiesThe Fund seeks to achieve long and short exposure to global equity, bond, currency and commodity markets through a wide range of derivative instruments and direct investments. Under normal market conditions, the Adviser typically will make extensive use of derivative instruments, in particular futures and forward contracts on global equity and fixed income securities, securities indices (including both broad- and narrow-based securities indices), currencies, commodities and other instruments. These investments are intended to provide the Fund with risk and return characteristics similar to those of a diversified portfolio of hedge funds.The Fund seeks to generate absolute returns over time rather than track the performance of any particular index of hedge fund returns. In selecting investments for the Fund, the Adviser uses quantitative models to estimate the market exposures that drive the aggregate returns of a diverse set of hedge funds. These market exposures may include, for example, exposures to the returns of stocks, fixed income securities (including U.S. and non-U.S. government securities), currencies and commodities. The Adviser will have great flexibility to allocate the Fund’s derivatives exposure among various securities, indices, currencies, commodities and other instruments, and the amount of the Fund’s assets that may be allocated to derivative strategies and among these various instruments is expected to vary over time. The Fund will not invest directly in hedge funds.Under normal market conditions, it is expected that no more than 25% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to the Fund’s derivative transactions. The notional value of the Fund’s derivative investments, however, will generally exceed 25% of the Fund’s assets. The Fund expects that under normal market conditions it will invest at least 75% of its total assets in money market and other short-term, high quality securities (the “Money Market Portion”) managed by Reich & Tang Asset Management, LLC (the “Subadviser”), although the Fund may invest less than this percentage. The assets allocated to the Money Market Portion will be used primarily to finance the Fund’s investments in derivatives and similar instruments and, secondarily, to provide the Fund with incremental income and liquidity. Although the Fund will invest a significant portion of its assets in money market instruments, the Fund is not a “money market” fund and the value of the Money Market Portion as well as the value of the Fund’s shares may decrease.Although the Fund does not intend to invest in physical commodities directly, the Fund expects to obtain investment exposure to commodity-related derivatives through a wholly-owned subsidiary organized under the laws of the Cayman Islands that will make commodity-related investments (the “Commodity Subsidiary”). Under normal market conditions, no more than 10% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to these transactions.The Fund will concentrate its investments in the financial services industry, which means it will normally invest at least 25% of its total assets in securities and other obligations (for example, bank certificates of deposit) of issuers in such industry.The Fund may engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance.The percentage limitations set forth in this Fund summary are not investment restrictions and the Fund may exceed these limits from time to time.Principal RisksThe principal risks of investing in the Fund are summarized below. The Fund does not represent a complete investment program. You may lose money by investing in the Fund.Commodity Risk: This is the risk that exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of physical commodities or commodity-linked derivative instruments may be affected by changes in overall market movements, commodity price volatility, changes in interest rates, currency fluctuations, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund.

8

Fund SummaryCommodity Subsidiary Risk: Investing in the Commodity Subsidiary will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments, such as commodity investments risk. The Commodity Subsidiary is not registered under the Investment Company Act of 1940 (the “1940 Act”) and is not subject to all of the investor protections of the 1940 Act. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its shareholders.Concentrated Investment Risk: The Fund is particularly vulnerable to events affecting companies in the financial services industry because the Fund concentrates its investments in securities and other obligations of issuers in such industry. Examples of risks affecting the financial services industry include changes in governmental regulation, issues relating to the availability and cost of capital, changes in interest rates and/or monetary policy and price competition. In addition, financial services companies are often more highly leveraged than other companies, making them inherently riskier. As a result, the Fund’s shares may rise and fall in value more rapidly and to a greater extent than shares of a fund that does not concentrate or focus in a particular industry or economic sector. The financial services industry has recently experienced high volatility and a number of issuer failures and the value of many of these securities has significantly declined. As a result, the risk associated with investing in the Fund may be increased as compared to a fund that does not concentrate in the financial services industry.Credit/Counterparty Risk: Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.Currency Risk: Fluctuations in the exchange rates between the different currencies may negatively affect an investment. The Fund may hedge its exposure to foreign currencies and may invest in foreign currencies as an asset class.Derivatives Risk: Derivatives are subject to changes in the value of the underlying asset or indices on which such transactions are based. There is no guarantee that the use of derivatives will be effective or that suitable transactions will be available. Even a small investment in derivatives may give rise to leverage risk and can have a significant impact on the Fund’s exposure to securities markets values, interest rates or currency exchange rates. It is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. The use of derivatives for other than hedging purposes may be considered a speculative activity, and involves greater risks than are involved in hedging. The Fund’s use of derivatives, such as futures, forward contracts, foreign currency transactions and commodity-linked derivatives involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward contracts and other OTC derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices, liquidity risk, allocation risk and the risk of losing more than the initial margin required to initiate derivatives positions. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. There can be no assurance that the Fund’s derivative counterparties will not experience financial difficulties, possibly resulting in losses to the Fund.Equity Securities Risk: The value of the Fund’s investments in equity securities could be subject to unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock.Foreign Securities Risk: The Fund’s investments in foreign securities are subject to foreign currency fluctuations. Foreign securities may be subject to higher volatility than U.S. securities, varying degrees of regulation and limited liquidity. Investments in foreign securities may be subject to greater political, economic, environmental, credit and information risks.Hedge Fund Risk: Hedge funds are typically unregulated private investment pools available only to sophisticated investors. They are often illiquid and highly leveraged. Although the Fund will not invest directly in hedge funds, because the Fund’s investments are intended to provide exposure to the factors that drive hedge fund returns, an investment in the Fund will be subject to many of the same risks associated with an investment in a diversified portfolio of hedge funds. Therefore, the Fund’s performance may be lower than the returns of the broader stock market and the Fund’s net asset value may fluctuate substantially over time.Index/Tracking Error Risk: Although the Fund does not seek to track any particular index, the Fund seeks to analyze the factors that drive hedge fund returns, as determined by reference to one or more indices. These indices may not provide an accurate representation of hedge fund returns generally, and the Adviser’s strategy may not successfully identify or be able to replicate factors that drive returns. There is a risk that hedge fund return data provided by third party hedge fund index providers may be inaccurate or may not accurately reflect hedge fund returns due to survivorship bias, self-reporting bias or other biases.

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Fund Summary Interest Rate Risk: Changes in interest rates may cause the value of the Fund’s investments to decrease. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment.Issuer Risk: The value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.Leverage Risk: This is the risk associated with securities or practices (e.g., borrowing and the use of certain derivatives) and investment in certain types of derivatives that multiply small index or market movements into larger changes in value. Use of derivative instruments may involve leverage. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. Futures and forward currency contracts are derivatives and may be subject to this type of risk.Liquidity Risk: Liquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Illiquid investments also may be difficult to value.Management Risk: A strategy used by the Fund’s portfolio managers may fail to produce the intended result. The Adviser utilizes various proprietary quantitative models to identify investment opportunities. There is a possibility that one or all of the quantitative models may fail to identify profitable opportunities at any time. Furthermore, they may incorrectly identify opportunities and these misidentified opportunities may lead to substantial losses.Market Risk: The market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions. The Fund’s portfolio managers will attempt to reduce this risk by implementing various volatility management strategies and techniques. However, there is no guarantee that such strategies and techniques will produce the intended result.U.S. Government Securities Risk: Investments in certain U.S. government securities may not be supported by the full faith and credit of the U.S. government. Accordingly, no assurance can be given that the U.S. government will provide financial support to U.S. government agencies, instrumentalities or sponsored enterprises if it is not obligated to do so by law. The maximum potential liability of the issuers of some U.S. government securities held by the Fund may greatly exceed their current resources, and it is possible that these issuers will not have the funds to meet their payment obligations in the future. In such a case, the Fund would have to look principally to the agency, instrumentality or sponsored enterprise issuing or guaranteeing the security for ultimate repayment, and the Fund may not be able to assert a claim against the U.S. government itself in the event the agency, instrumentality or sponsored enterprise does not meet its commitment. Concerns about the capacity of the U.S. government to meet its obligations may raise the interest rates payable on its securities, negatively impacting the price of such securities already held by the Fund.Valuation Risk: This is the risk that the Fund has valued certain securities at a higher price than the price at which they can be sold. This risk may be especially pronounced for investments, such as derivatives, which may be illiquid or which may become illiquid.Risk/Return Bar Chart and TableThe bar chart and table shown below provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year-to-year and by showing how the Fund’s average annual returns for the one-year and life-of-fund periods compare with those of a broad measure of market performance. The Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information is available online at ga.natixis.com and/or by calling the Fund toll-free at 800-225-5478.The bar chart does not reflect any sales charge that you may be required to pay when you buy or redeem the Fund’s shares. A sales charge will reduce your return.

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Fund SummaryTotal Returns for Class A

	Highest Quarterly Return: Third Quarter 2010, 7.26%
	Lowest Quarterly Return: Second Quarter 2010, -4.19%

Average Annual Total Returns (for the periods ended December 31, 2010)	Past 1 Year	Life of Fund (9/30/08)
ASG Global Alternatives Fund Class A – Return Before Taxes	0.83%	2.97%
Return After Taxes on Distributions	-0.20%	2.21%
Return After Taxes on Distributions & Sales of Fund Shares	0.91%	2.17%
Class C – Return Before Taxes	5.21%	4.95%
HFRI Fund of Funds Composite Index (Calculated from October 1, 2008)	5.46%	2.51%

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans, qualified plans, education savings accounts, such as 529 plans, or individual retirement accounts. The after-tax returns are shown for only one class of the Fund. After-tax returns for the other classes of the Fund will vary. Index performance reflects no deduction for fees, expenses or taxes. The Return After Taxes on Distributions & Sales of Fund Shares for the 1-year period exceeds the Return Before Taxes due to an assumed tax benefit from losses on a sale of Fund shares at the end of the measurement period. Index performance reflects no deduction for fees, expenses or taxes.ManagementInvestment Adviser AlphaSimplex Group, LLCInvestment SubadviserReich & Tang Asset Management, LLCPortfolio ManagersAndrew W. Lo, Chief Investment Strategist of the Adviser, has served as co-portfolio manager of the Fund since September 2008.Jeremiah H. Chafkin, President of the Adviser, has served as co-portfolio manager of the Fund since September 2008.Peter A. Lee, Research Scientist for hedge fund beta replication of the Adviser, has served as co-portfolio manager of the Fund since May 2010.Robert S. Rickard, Senior Vice President and head of Portfolio Management and Trading of the Subadviser, has served as co-portfolio manager of the Fund since September 2008.

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Fund Summary Purchase and Sale of Fund SharesThe following chart shows the investment minimums for various types of accounts:

Type of Account	Minimum Initial Purchase	Minimum Subsequent Purchase
Any account other than those listed below	$2,500	$100
For shareholders participating in Natixis Funds’ Investment Builder Program	$1,000	$50
For Traditional IRA, Roth IRA, Rollover IRA, SEP-IRA and Keogh plans using the Natixis Funds’ prototype document (direct accounts, not held through intermediary)	$1,000	$100
Coverdell Education Savings Accounts	$500	$100

The Fund’s shares are available for purchase (and are redeemable on any business day) through your investment dealer, directly from the Fund by writing to the Fund at Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, by exchange, by wire, by internet at ga.natixis.com, through the Automated Clearing House system, or, in the case of redemptions, by telephone at 800-225-5478 or by the Systematic Withdrawal Plan.Tax InformationFund distributions are generally taxable to you as ordinary income or capital gain, except for distributions to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax law generally.Payments to Broker-Dealers and Other Financial IntermediariesIf you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of the Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

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Fund Summary

ASG Managed Futures Strategy Fund

Investment GoalThe Fund pursues an absolute return strategy that seeks to provide capital appreciation.Fund Fees & Expenses The following table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Natixis Fund Complex. More information about these and other discounts is available from your financial professional and in the section “How Sales Charges Are Calculated” on page 66 of the Prospectus and on page 99 in the section “Reduced Sales Charges” of the Statement of Additional Information (“SAI”).

Shareholder Fees(fees paid directly from your investment)	Class A	Class C
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	5.75%	None
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, as applicable)	None	1.00%
Redemption fees	None	None

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)	Class A	Class C
Management fees	1.25%	1.25%
Distribution and/or service (12b-1) fees	0.25%	1.00%
Other expenses (estimated for the current fiscal year)	0.38%	0.38%
Total annual fund operating expenses	1.88%	2.63%
Fee waiver and/or expense reimbursement1	0.16%	0.16%
Total annual fund operating expenses after fee waiver and/or expense reimbursement	1.72%	2.47%

ExampleThis example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first year and on the Total Annual Fund Operating Expenses for the remaining years. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	Class A	Class C
		If shares are redeemed	If shares are not redeemed
1 year	$740	$350	$250
3 years	$1,117	$802	$802

1 The Fund’s investment adviser has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.70% and 2.45% of the Fund’s average daily net assets for Class A and C shares, respectively, exclusive of brokerage expenses, interest expense, taxes, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s investment adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 1.70% and 2.45% of the Fund’s average daily net assets for Class A and C shares, respectively. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

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Fund Summary Portfolio TurnoverThe Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. Due to the short-term nature of the Fund’s investment portfolio, the Fund does not calculate a portfolio turnover rate. The Fund’s trading in derivatives is active and frequent. Active and frequent trading of derivatives, like active and frequent trading of securities, will result in transaction costs which reduce fund returns.Investments, Risks and PerformancePrincipal Investment Strategies The Fund seeks to generate positive absolute returns over time. Under normal market conditions, the Fund’s adviser, AlphaSimplex Group, LLC (“AlphaSimplex”) typically will make extensive use of a variety of derivative instruments, including futures and forward contracts, to capture the exposures suggested by its absolute return strategy while also seeking to add value through volatility management. These market exposures, which are expected to change over time, may include, for example, exposures to the returns of U.S. and non-U.S. equity and fixed income securities indices (including both broad- and narrow-based securities indices), currencies and commodities. AlphaSimplex uses a proprietary quantitative model to identify price trends in equity, fixed income, currency and commodity instruments. The Fund may have both “short” and “long” exposures within an asset class based upon AlphaSimplex’s analysis of multiple time horizons to identify trends in a particular asset class. A “short” exposure will benefit when the underlying asset class decreases in price. A “long” exposure will benefit when the underlying asset class increases in price. AlphaSimplex will scale the notional exposure of the Fund’s futures and currency forward positions with the objective of targeting a relatively stable level of annualized volatility for the Fund’s overall portfolio. AlphaSimplex will have great flexibility to allocate the Fund’s derivatives exposure among various securities, indices, currencies, commodities and other instruments, and the amount of the Fund’s assets that may be allocated to derivative strategies and among these various instruments is expected to vary over time.Under normal market conditions, it is expected that no more than 25% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to the Fund’s derivative transactions. The notional value of the Fund’s derivative investments, however, will generally exceed 25% of the Fund’s total assets. The Fund expects that under normal market conditions it will invest at least 75% of its total assets in money market and other short-term, high quality securities (such as bankers’ acceptances, certificates of deposit, commercial paper, loan participations, repurchase agreements and time deposits) (the “Money Market Portion”) managed by Reich & Tang Asset Management, LLC (“Reich & Tang”), although the Fund may invest less than this percentage. The assets allocated to the Money Market Portion will be used primarily to support the Fund’s investments in derivatives and, secondarily, to provide the Fund with incremental income and liquidity. Although the Fund will invest a significant portion of its assets in money market instruments, the Fund is not a “money market” fund and the value of the Money Market Portion as well as the value of the Fund’s shares may decrease. The Fund will concentrate its investments in the financial services industry, which means it will normally invest at least 25% of its total assets in securities and other obligations (for example, bank certificates of deposit, repurchase agreements and time deposits) of issuers in such industry.Although the Fund does not intend to invest in physical commodities directly, the Fund expects to obtain investment exposure to commodities and commodity-related derivatives by investing in a wholly-owned subsidiary organized under the laws of the Cayman Islands that will make commodity-related investments (the “Commodity Subsidiary”). Under normal market conditions, no more than 10% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to these transactions.Although the Fund seeks positive absolute returns over time, it is likely that the Fund’s investment returns may be volatile over short periods of time. The Fund may outperform the overall securities market during periods of flat or negative market performance and may underperform during periods of strong market performance. There can be no assurance that the Fund’s returns over time or during any period will be positive or that the Fund will outperform the overall security markets over time or during any particular period.The Fund may engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance.The percentage limitations set forth in this Fund summary are not investment restrictions and the Fund may exceed these limits from time to time.Principal RisksThe principal risks of investing in the Fund are summarized below. The Fund does not represent a complete investment program. You may lose money by investing in the Fund.Commodity Risk: This is the risk that exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of physical commodities or commodity-linked derivative instruments may be affected by changes in overall market movements, commodity price volatility, changes in interest rates, currency fluctuations, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. Recent proposals by the Commodity

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Fund Summary Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund.
Commodity Subsidiary Risk: Investing in the Commodity Subsidiary will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments, such as commodity investments risk. The Commodity Subsidiary is not registered under the Investment Company Act of 1940 (the “1940 Act”) and is not subject to all of the investor protections of the 1940 Act. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its shareholders.Concentrated Investment Risk: The Fund is particularly vulnerable to events affecting companies in the financial services industry because the Fund concentrates its investments in securities and other obligations of issuers in such industry. Examples of risks affecting the financial services industry include changes in governmental regulation, issues relating to the availability and cost of capital, changes in interest rates and/or monetary policy and price competition. In addition, financial services companies are often more highly leveraged than other companies, making them inherently riskier. As a result, the Fund’s shares may rise and fall in value more rapidly and to a greater extent than shares of a fund that does not concentrate or focus in a particular industry or economic sector. The financial services industry has recently experienced high volatility and a number of issuer failures and the value of many of these securities has significantly declined. As a result, the risk associated with investing in the Fund may be increased as compared to a fund that does not concentrate in the financial services industry.Credit/Counterparty Risk: Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.Currency Risk: Fluctuations in the exchange rates between the different currencies may negatively affect an investment. The Fund may hedge its exposure to foreign currencies and may invest in foreign currencies as an asset class.Derivatives Risk: Derivatives are subject to changes in the value of the underlying asset or indices on which such transactions are based. There is no guarantee that the use of derivatives will be effective or that suitable transactions will be available. Even a small investment in derivatives may give rise to leverage risk and can have a significant impact on the Fund’s exposure to securities markets values, interest rates or currency exchange rates. It is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. The use of derivatives for other than hedging purposes may be considered a speculative activity, and involves greater risks than are involved in hedging. The Fund’s use of derivatives, such as futures, forward contracts, foreign currency transactions and commodity-linked derivatives involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward contracts and other OTC derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices, liquidity risk, allocation risk and the risk of losing more than the initial margin required to initiate derivatives positions. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. There can be no assurance that the Fund’s derivative counterparties will not experience financial difficulties, possibly resulting in losses to the Fund.Equity Securities Risk: The value of the Fund’s investments in equity securities could be subject to unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock.Foreign Securities Risk: The Fund’s investments in foreign securities are subject to foreign currency fluctuations. Foreign securities may be subject to higher volatility than U.S. securities, varying degrees of regulation and limited liquidity. Investments in foreign securities may be subject to greater political, economic, environmental, credit and information risks.Interest Rate Risk: Changes in interest rates may cause the value of the Fund’s investments to decrease. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment.Issuer Risk: The value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.

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Fund Summary Leverage Risk: This is the risk associated with securities or practices (e.g., borrowing and the use of certain derivatives) and investment in certain types of derivatives that multiply small index or market movements into larger changes in value. Use of derivative instruments may involve leverage. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. Futures and forward currency contracts are derivatives and may be subject to this type of risk.Liquidity Risk: Liquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Illiquid investments also may be difficult to value.Management Risk: A strategy used by the Fund’s portfolio managers may fail to produce the intended result. The Adviser utilizes various proprietary quantitative models to identify investment opportunities. There is a possibility that one or all of the quantitative models may fail to identify profitable opportunities at any time. Furthermore, they may incorrectly identify opportunities and these misidentified opportunities may lead to substantial losses.Market Risk: The market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions. The Fund’s portfolio managers will attempt to reduce this risk by implementing various volatility management strategies and techniques. However, there is no guarantee that such strategies and techniques will produce the intended result.Mortgage-Related and Asset-Backed Securities Risk: In addition to the risks associated with investments in fixed-income securities generally (for example, credit, liquidity and valuation risk), mortgage-related and asset-backed securities are subject to the risks of the mortgages and assets underlying the securities as well as prepayment risk, the risk that the securities may be prepaid and result in the reinvestment of the prepaid amounts in securities with lower yields than the prepaid obligations. Conversely, there is a risk that an unexpected rise in interest rates will extend the life of a mortgage-related or asset-backed security beyond the expected prepayment time, typically reducing the security’s value. The Fund also may incur a loss when there is a prepayment of securities that were purchased at a premium. The Fund’s investments in other asset-backed securities are subject to risks similar to those associated with mortgage-related securities, as well as additional risks associated with the nature of the assets and the servicing of those assets.U.S. Government Securities Risk: Investments in certain U.S. government securities may not be supported by the full faith and credit of the U.S. government. Accordingly, no assurance can be given that the U.S. government will provide financial support to U.S. government agencies, instrumentalities or sponsored enterprises if it is not obligated to do so by law. The maximum potential liability of the issuers of some U.S. government securities held by the Fund may greatly exceed their current resources, and it is possible that these issuers will not have the funds to meet their payment obligations in the future. In such a case, the Fund would have to look principally to the agency, instrumentality or sponsored enterprise issuing or guaranteeing the security for ultimate repayment, and the Fund may not be able to assert a claim against the U.S. government itself in the event the agency, instrumentality or sponsored enterprise does not meet its commitment. Concerns about the capacity of the U.S. government to meet its obligations may raise the interest rates payable on its securities, negatively impacting the price of such securities already held by the Fund.Valuation Risk: This is the risk that the Fund has valued certain securities at a higher price than the price at which they can be sold. This risk may be especially pronounced for investments, such as derivatives, which may be illiquid or which may become illiquid.Risk/Return Bar Chart and TableBecause the Fund has not been in existence for a full calendar year, information related to the Fund’s performance, including a bar chart showing annual returns, has not been included in this Prospectus. The performance information provided by the Fund in the future will give some indication of the risks of an investment in the Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns compare against those of a broad measure of market performance.ManagementInvestment Adviser AlphaSimplex Group, LLCInvestment SubadviserReich & Tang Asset Management, LLCPortfolio ManagersAndrew W. Lo, Chief Investment Strategist of AlphaSimplex, has served as co-portfolio manager of the Fund since July 2010.Jeremiah H. Chafkin, President of AlphaSimplex, has served as co-portfolio manager of the Fund since July 2010.

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Fund Summary Robert S. Rickard, Senior Vice President and head of Portfolio Management and Trading of Reich & Tang, has served as co-portfolio manager of the Fund since July 2010.Purchase and Sale of Fund SharesThe following chart shows the investment minimums for various types of accounts:

Type of Account	Minimum Initial Purchase	Minimum Subsequent Purchase
Any account other than those listed below	$2,500	$100
For shareholders participating in Natixis Funds’ Investment Builder Program	$1,000	$50
For Traditional IRA, Roth IRA, Rollover IRA, SEP-IRA and Keogh plans using the Natixis Funds’ prototype document (direct accounts, not held through intermediary)	$1,000	$100
Coverdell Education Savings Accounts	$500	$100

The Fund’s shares are available for purchase (and are redeemable on any business day) through your investment dealer, directly from the Fund by writing to the Fund at Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, by exchange, by wire, by internet at ga.natixis.com, through the Automated Clearing House system, or, in the case of redemptions, by telephone at 800-225-5478 or by the Systematic Withdrawal Plan.Tax InformationFund distributions are generally taxable to you as ordinary income or capital gain, except for distributions to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax law generally.Payments to Broker-Dealers and Other Financial IntermediariesIf you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of the Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

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Fund Summary

Gateway Fund

Investment GoalThe Fund seeks to capture the majority of the returns associated with equity market investments, while exposing investors to less risk than other equity investments.Fund Fees & Expenses The following table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Natixis Fund Complex. More information about these and other discounts is available from your financial professional and in the section “How Sales Charges Are Calculated” on page 66 of the Prospectus and on page 99 in the section “Reduced Sales Charges” of the Statement of Additional Information (“SAI”).

Shareholder Fees(fees paid directly from your investment)	Class A	Class C
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	5.75%	None
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, as applicable)	None	1.00%
Redemption fees	None	None

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)	Class A	Class C
Management fees	0.65%	0.65%
Distribution and/or service (12b-1) fees	0.25%	1.00%
Other expenses	0.15%	0.15%
Total annual fund operating expenses	1.05%	1.80%
Fee waiver and/or expense reimbursement1	0.11%	0.10%
Total annual fund operating expenses after fee waiver and/or expense reimbursement	0.94%	1.70%

ExampleThis example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first year and on the Total Annual Fund Operating Expenses for the remaining years. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	Class A	Class C
		If shares are redeemed	If shares are not redeemed
1 year	$665	$273	$173
3 years	$880	$557	$557
5 years	$1,111	$966	$966
10 years	$1,774	$2,108	$2,108

1 Gateway Investment Advisers, LLC (the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.94% and 1.70% of the Fund’s average daily net assets for Class A and C shares, respectively, exclusive of brokerage expenses, interest expense, taxes, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 0.94% and 1.70% of the Fund’s average daily net assets for Class A and C shares, respectively. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

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Fund Summary Portfolio TurnoverThe Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During its most recently ended fiscal year, the Fund’s portfolio turnover rate was 7% of the average value of its portfolio.Investments, Risks and Performance Principal Investment Strategies Under normal circumstances, the Fund invests in a broadly diversified portfolio of common stocks, while also selling index call options. The Fund also buys index put options, which can protect the Fund from a significant market decline that may occur over a short period of time. The combination of the diversified stock portfolio, the cash flow from the sale of index call options and the downside protection from index put options is intended to provide the Fund with the majority of the returns associated with equity market investments while exposing investors to less risk than other equity investments. The Fund typically invests in companies with small, medium or large market capitalizations. Equity securities purchased by the Fund may include U.S.-exchange-listed common stocks, American Depositary Receipts (ADRs), and interests in real estate investment trusts (REITs).From time to time, the Fund may reduce its holdings of put options, resulting in an increased exposure to a market decline. The Fund may invest in foreign securities traded in U.S. markets (through ADRs or stocks traded in U.S. dollars). The Fund may also invest in other investment companies, including money market funds, to the extent permitted by the Investment Company Act of 1940 (the “1940 Act”). The Fund may enter into repurchase agreements and/or hold cash and cash equivalents. As a temporary defensive measure, the Fund may purchase U.S. government securities, certificates of deposit, commercial paper, bankers’ acceptance, and/or repurchase agreements or hold cash (U.S. dollars, foreign currencies or multinational currency units) for temporary defensive purposes in response to adverse market, economic or political conditions, or, under normal circumstances, for purposes of liquidity. These investments may prevent the Fund from achieving its investment objective.The Fund not only strives for the majority of the returns associated with equity market investments, but also returns in excess of those available from other investments comparable in volatility. With its core investment in equities, the Fund is significantly less vulnerable to fluctuations in value caused by interest rate volatility, a risk factor present in both fixed income investments and “hybrid investments” (blends of equity and short-term fixed income), although the Fund expects to generally have lower long-term returns than a portfolio consisting solely of equity securities. The Fund intends that its index option-based risk management strategy will limit the volatility inherent in equities while sacrificing less of the higher equity returns than hybrid investments.Principal RisksThe principal risks of investing in the Fund are summarized below. The Fund does not represent a complete investment program. You may lose money by investing in the Fund.Correlation Risk: The effectiveness of the Fund’s index option-based risk management strategy may be reduced if the performance of the Fund’s equity portfolio does not correlate to that of the index underlying its option positions.Equity Securities Risk: The value of the Fund’s investments in equity securities could be subject to unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock. Small- and mid-capitalization and emerging growth companies may be subject to more abrupt price movements, limited markets and less liquidity than larger, more established companies, which could adversely effect the value of the Fund’s portfolio.Foreign Securities Risk: The Fund’s investments in foreign securities are subject to foreign currency fluctuations. Foreign securities may be subject to higher volatility than U.S. securities, varying degrees of regulation and limited liquidity. Investments in foreign securities may be subject to greater political, economic, environmental, credit and information risks.Investments in Other Investment Companies Risk: The Fund will indirectly bear the management, service and other fees of the other investment companies in which it invests in addition to its own expenses.Management Risk: A strategy used by the Fund’s portfolio managers may fail to produce the intended result.Market Risk: The market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions.

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Fund Summary Options Risk: The value of the Fund’s positions in index options could fluctuate in response to changes in the value of the underlying index. Writing index call options can reduce the risk of owning stocks, but it limits the opportunity to profit from an increase in the market value of stocks in exchange for up-front cash at the time of selling the call option. The Fund also risks losing all or part of the cash paid for purchasing index put options. Unusual market conditions or the lack of a ready market for any particular option at a specific time may reduce the effectiveness of the Fund’s option strategies, and for these and other reasons the Fund’s option strategies may not reduce the Fund’s volatility to the extent desired.REITs Risk: Investments in the real estate industry, including REITs, are particularly sensitive to economic downturns and are sensitive to factors such as changes in real estate values, property taxes and tax laws, interest rates, cash flow of underlying real estate assets, occupancy rates, government regulations affecting zoning, land use and rents and the management skill and creditworthiness of the issuer. Companies in the real estate industry also may be subject to liabilities under environmental and hazardous waste laws. In addition, the value of a REIT is affected by changes in the value of the properties owned by the REIT or mortgage loans held by the REIT. REITs are also subject to default and prepayment risk. Many REITs are highly leveraged, increasing their risk. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests in addition to the expenses of the Fund.Risk/Return Bar Chart and Table The bar chart and table shown below provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns for the one-year, five-year and ten-year periods compare with those of a broad measure of equity market performance and a measure of the performance of investment-grade bonds. The Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information is available online at ga.natixis.com and/or by calling the Fund toll-free at 800-225-5478.The returns shown in the bar chart and the table for periods before February 15, 2008 (February 19, 2008 for Class C shares) is that of the Fund’s predecessor (the “Gateway Predecessor Fund”), restated to reflect the expenses and sales loads of Class A and Class C shares.The bar chart does not reflect any sales charge that you may be required to pay when you buy or redeem the Fund’s shares. A sales charge will reduce your return.Total Returns for Class A

	Highest Quarterly Return: Fourth Quarter 2002, 9.55%
	Lowest Quarterly Return: Fourth Quarter 2008, -11.15%

Average Annual Total Returns (for the periods ended December 31, 2010)	Past 1 Year	Past 5 Years	Past 10 Years
Class A - Return Before Taxes	-1.20%	1.50%	2.14%
Class A - Return After Taxes on Distributions	-1.43%	1.07%	1.74%
Class A - Return After Taxes on Distributions & Sale of Fund Shares	-0.49%	1.12%	1.64%
Class C - Return Before Taxes	3.03%	1.95%	1.96%
S&P 500 Index	15.06%	2.29%	1.41%
Barclays Capital U.S. Aggregate Bond Index	6.54%	5.80%	5.84%

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans, qualified plans, education savings accounts, such as 529 plans, or individual retirement accounts. The after-tax returns are shown for only one class of the Fund. After-tax returns for the other classes of the Fund will

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Fund Summary vary. Index performance reflects no deduction for fees, expenses or taxes. The Return After Taxes on Distributions & Sale of Fund Shares for the 1-year period exceeds the Return Before Taxes due to an assumed tax benefit from losses on a sale of Fund shares at the end of the measurement period. Index performance reflects no deduction for fees, expenses or taxes.ManagementInvestment AdviserGateway Investment Advisers, LLCPortfolio ManagersJ. Patrick Rogers, CFA, president and CEO of the Adviser, has served as co-portfolio manager of the Fund (including the Gateway Predecessor Fund) since December 2006. Mr. Rogers was previously portfolio manager from 1997 to December 2006 and prior to that co-portfolio manager from 1994.Paul R. Stewart, CFA, senior vice president and chief investment officer of the Adviser, has served as co-portfolio manager of the Fund (including the Gateway Predecessor Fund) since December 2006.Michael T. Buckius, CFA, senior vice president and portfolio manager of the Adviser, has served as co-portfolio manager of the Fund since June 2008.Purchase and Sale of Fund SharesThe following chart shows the investment minimums for various types of accounts:

Type of Account	Minimum Initial Purchase	Minimum Subsequent Purchase
Any account other than those listed below	$2,500	$100
For shareholders participating in Natixis Funds’ Investment Builder Program	$1,000	$50
For Traditional IRA, Roth IRA, Rollover IRA, SEP-IRA and Keogh plans using the Natixis Funds’ prototype document (direct accounts, not held through intermediary)	$1,000	$100
Coverdell Education Savings Accounts	$500	$100

The Fund’s shares are available for purchase (and are redeemable on any business day) through your investment dealer, directly from the Fund by writing to the Fund at Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, by exchange, by wire, by internet at ga.natixis.com, through the Automated Clearing House system, or, in the case of redemptions, by telephone at 800-225-5478 or by the Systematic Withdrawal Plan.Tax InformationFund distributions are generally taxable to you as ordinary income or capital gain, except for distributions to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax law generally.Payments to Broker-Dealers and Other Financial IntermediariesIf you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of the Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

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Fund Summary

Loomis Sayles Absolute Strategies Fund

Investment GoalThe Fund seeks to provide an attractive absolute total return, complemented by prudent investment management designed to manage risks and protect investor capital. The secondary goal of the Fund is to achieve these returns with relatively low volatility.Fund Fees & Expenses The following table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Natixis Fund Complex. More information about these and other discounts is available from your financial professional and in the section “How Sales Charges Are Calculated” on page 66 of the Prospectus and on page 99 in the section “Reduced Sales Charges” of the Statement of Additional Information (“SAI”).

Shareholder Fees(fees paid directly from your investment)	Class A	Class C
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	4.50%	None
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, as applicable)	None	1.00%
Redemption fees	None	None

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)	Class A	Class C
Management fees	0.70%	0.70%
Distribution and/or service (12b-1) fees	0.25%	1.00%
Other expenses (estimated for the current fiscal year)	0.31%	0.31%
Acquired Fund Fees and Expenses (estimated for the current fiscal year)	0.02%	0.02%
Total annual fund operating expenses	1.28%	2.03%
Fee waiver and/or expense reimbursement1	0.00%	0.00%
Total annual fund operating expenses after fee waiver and/or expense reimbursement	1.28%	2.03%

ExampleThis example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	Class A	Class C
		If shares are redeemed	If shares are not redeemed
1 year	$575	$306	$206
3 years	$838	$637	$637

1 Loomis, Sayles & Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.30% and 2.05% of the Fund’s average daily net assets for Class A and C shares, respectively, exclusive of brokerage expenses, interest expense, taxes, Acquired Fund Fees and Expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 1.30% and 2.05% of the Fund’s average daily net assets for Class A and C shares, respectively. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed.

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Fund Summary Portfolio TurnoverThe Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During its most recently ended fiscal year, the Fund’s portfolio turnover rate was 39% of the average value of its portfolio covering the period December 15, 2010 through December 31, 2010.Investments, Risks and PerformancePrincipal Investment Strategies The Fund has an absolute return investment objective, which means that it is not managed relative to an index and that it attempts to achieve positive total returns over a full market cycle. The Fund intends to pursue its objective by utilizing a flexible investment approach that allocates investments across a global range of investment opportunities related to credit, currencies and interest rates, while employing risk management strategies to mitigate downside risk. The Fund may invest up to 100% of its total assets in below investment-grade fixed-income securities (also known as “junk bonds”) and derivatives that have returns related to the returns on below investment-grade fixed-income securities, although it is expected that, under normal market conditions, the Fund’s net exposure (i.e., long exposures obtained through direct investments in securities and in derivatives minus short exposures obtained through derivatives) to below investment-grade fixed-income assets generally will not exceed 50% of the Fund’s total assets. Under normal market conditions, the Fund also may invest up to 50% of its total assets in investments denominated in non-U.S. currencies and related derivatives, including up to 20% in investments denominated in emerging market currencies and related derivatives. The Fund expects that its exposure to these asset classes will often be obtained substantially through the use of derivative instruments. Currency positions that are intended to hedge the Fund’s non-U.S. currency exposure (i.e., currency positions that are not made for investment purposes) will offset positions in the same currency that are made for investment purposes when calculating the limitation on investments in non-U.S. and emerging market currency investments because the Fund believes that hedging a currency position is likely to negate some or all of the currency risk associated with the original currency position. The Fund does not have limits on the duration of its portfolio, and the Fund’s duration will change over time.In selecting investments for the Fund, the Adviser develops long-term portfolio themes driven by macro-economic indicators. These include secular global economic trends, demographic trends and labor supply, analysis of global capital flows and assessments of geopolitical factors. The Adviser then develops shorter-term portfolio strategies based on factors including, but not limited to, economic, credit and Federal Reserve cycles, and top-down sector valuations and bottom-up security valuations. The Adviser employs active risk management, with a focus on credit, interest rate and currency risks. Additionally, the portfolio managers will use risk management tools in constructing and optimizing the portfolio and seek to manage risk on an ongoing basis. The portfolio management team expects to actively evaluate each investment idea based upon its return potential, its level of risk and its fit within the team’s overall macro strategy when deciding whether to buy or sell investments.The Fund will pursue its investment goal by obtaining long investment exposures through direct cash investments and derivatives and short investment exposures substantially through derivatives. A “long” investment exposure is an investment that rises in value with a rise in the value of an asset, asset class or index and declines in value with a decline in the value of that asset, asset class or index. A “short” investment exposure is an investment that rises in value with a decline in the value of an asset, asset class or index and declines in value with a rise in the value of that asset, asset class or index. The Fund’s long and short investment exposures may, at times, each reach 100% of the assets invested in the Fund (excluding instruments primarily used for duration management and short-term investments (such as cash and money market instruments)), although these exposures may be higher or lower at any given time.Fixed-Income Investments. In connection with its principal investment strategies, the Fund may invest in a broad range of U.S. and non-U.S. fixed-income securities, including, but not limited to, corporate bonds, municipal securities, U.S. and non-U.S. government securities (including their agencies, instrumentalities and sponsored entities), securities of supranational entities, emerging market securities, commercial and residential mortgage-backed securities, collateralized mortgage obligations, other mortgage-related securities (such as adjustable rate mortgage securities), asset-backed securities, bank loans, convertible bonds, Rule 144A securities, real estate investment trusts (“REITs”), zero-coupon securities, step coupon securities, pay-in-kind securities, inflation-linked bonds, variable and floating rate securities, private placements and commercial paper.Non-U.S. Currency Investments. Under normal market conditions, the Fund may engage in a broad range of transactions involving non-U.S. and emerging market currencies, including, but not limited to, purchasing and selling forward currency exchange contracts in non-U.S. or emerging market currencies, investing in non-U.S. currency futures contracts, investing in options on non-U.S. currencies and non-U.S. currency futures, investing in cross-currency instruments (such as swaps), investing directly in non-U.S. currencies and investing in securities denominated in non-U.S. currencies. The Fund may engage in non-U.S. currency transactions for investment or for hedging purposes.Derivative Investments. For investment and hedging purposes, the Fund may invest substantially in a broad range of derivatives instruments and sometimes the majority of its investment returns will derive from its derivative investments. These derivative instruments include, but are not limited to, futures contracts (such as treasury futures and index futures), forward contracts, options (such as options on futures contracts, options on securities, interest rate/bond options, currency options, options on swaps and OTC options), warrants (such as non-U.S. currency warrants) and swap transactions

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Fund Summary (such as interest rate swaps, total return swaps and index swaps). In addition, the Fund may invest in credit derivative products that may be used to manage default risk and credit exposure. Examples of such products include, but are not limited to, credit default swap index products (such as LCDX, CMBX and ABX index products), single name credit default swaps, loan credit default swaps and asset-backed credit default swaps. Derivative instruments (such as those listed above) can be used to acquire or to transfer the risk and returns of a security without buying or selling the security. The Fund’s strategy may be highly dependent on the use of derivatives, and to the extent that they become unavailable or unattractive the Fund may be unable to fully implement its investment strategy.The Fund is non-diversified, which means that it is not limited to a percentage of assets that it may invest in any one issuer.The Fund expects to engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance.The percentage limitations set forth herein are not investment restrictions and the Fund may exceed these limits from time to time. In addition, when calculating these exposures, the Fund may use the notional value or an adjusted notional value of a derivative in order to reflect what the Adviser believes to be the most accurate assessment of the Fund’s real economic exposure.
Principal RisksThe principal risks of investing in the Fund are summarized below. The Fund does not represent a complete investment program. You may lose money by investing in the Fund.Agency Securities Risk: Agency securities are subject to fixed-income securities risk. Certain debt securities issued or guaranteed by agencies of the U.S. government are guaranteed as to the payment of principal and interest by the relevant entity but have not been backed by the full faith and credit of the U.S. government. Instead, they have been supported only by the discretionary authority of the U.S. government to purchase the agency’s obligations. An event affecting the guaranteeing entity could adversely affect the payment of principal or interest or both on the security and, therefore, these types of securities should be considered to be riskier than U.S. government securities.Below Investment-Grade Fixed-Income Securities Risk: This is the risk that the Fund’s investments in below investment-grade fixed-income securities, also known as “junk bonds,” may be subject to greater risks than other fixed-income securities, including being subject to greater levels of interest rate risk, credit risk (including a greater risk of default) and liquidity risk. The ability of the issuer to make principal and interest payments is predominantly speculative for below investment-grade fixed-income securities.Credit/Counterparty Risk: Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.Currency Risk: Fluctuations in the exchange rates between different currencies may negatively affect an investment. The Fund may be subject to currency risk because it may invest a significant portion of its assets in currency-related instruments, such as forward currency exchange contracts, foreign currency futures contracts, options on foreign currencies and foreign currency futures, cross-currency instruments (such as swaps) and direct investments in foreign currencies. The Fund also is subject to currency risk because it may invest in securities or other instruments denominated in, or receive revenues in, foreign currencies. The Adviser may elect not to hedge currency risk, which may cause the Fund to incur losses that would not have been incurred had the risk been hedged.Derivatives Risk: Derivatives are subject to changes in the value of the underlying asset or indices on which such transactions are based. There is no guarantee that the use of derivatives will be effective or that suitable transactions will be available. Even a small investment in derivatives may give rise to leverage risk and can have a significant impact on the Fund’s exposure to securities markets values, interest rates or currency exchange rates. It is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. The use of derivatives for other than hedging purposes may be considered a speculative activity, and involves greater risks than are involved in hedging. The Fund’s use of derivatives, such as futures, forward contracts, options, warrants, foreign currency transactions, swaps and credit default swaps, involves other risks, such as the credit risk

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Fund Summary relating to the other party to a derivative contract (which is greater for forward contracts, swaps and other OTC derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices, liquidity risk, allocation risk and the risk of losing more than the initial margin required to initiate derivatives positions. There can be no assurance that the Fund’s derivative counterparties will not experience financial difficulties, possibly resulting in losses to the Fund. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price.Emerging Markets Risk: Investing in emerging markets companies, which may be smaller and have shorter operating histories than companies in developed markets, involves risks in addition to, and greater than, those generally associated with investing in companies in developed foreign markets. The extent of economic development, political stability, market depth, infrastructure, capitalization and regulatory oversight in emerging market economies is generally less than in more developed markets.Fixed-Income Securities Risk: Fixed-income securities are subject to credit risk, interest rate risk and liquidity risk. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. You may lose money on your investment due to unpredictable drops in a security’s value or periods of below-average performance in a given security or in the securities market as a whole. In addition, an economic downturn or period of rising interest rates could adversely affect the market of these securities and reduce the Fund’s ability to sell them.Foreign Securities Risk: The Fund’s investments in foreign securities are subject to foreign currency fluctuations. Foreign securities may be subject to higher volatility than U.S. securities, varying degrees of regulation and limited liquidity. Investments in foreign securities may be subject to greater political, economic, environmental, credit and information risks.Inflation/Deflation Risk: Inflation risk is the risk that the value of assets or income from investments will be worth less in the future as inflation decreases the present value of future payments. Deflation risk is the risk that prices throughout the economy decline over time (the opposite of inflation). Deflation may have an adverse effect on the creditworthiness of issuers and may make issuer default more likely, which may result in a decline in the value of the Fund’s portfolio. Because the Fund seeks positive returns that exceed the rate of inflation over time, if the portfolio managers’ inflation forecasts are incorrect, the Fund may be more severely impacted than other funds.Interest Rate Risk: Changes in interest rates may cause the value of the Fund’s investments to decrease. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment.Issuer Risk: The value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.Leverage Risk: Use of derivative instruments may involve leverage. Leverage is the risk associated with securities or practices that multiply small index, market or asset price movements into larger changes in value. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. The use of leverage will increase the impact of gains and losses on the Fund’s returns, and may lead to significant losses if investments are not successful. However, the Adviser will attempt to ensure that at all times, the Fund has sufficient liquid assets to enable it to satisfy its obligations under its derivative contracts.Liquidity Risk: Liquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Illiquid investments also may be difficult to value.Management Risk: A strategy used by the Fund’s portfolio managers may fail to produce the intended result.Market Risk: The market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions. The Fund’s portfolio managers will attempt to reduce this risk by implementing various volatility management strategies and techniques. However, there is no guarantee that such strategies and techniques will produce the intended result.Mortgage-Related and Asset-Backed Securities Risk: In addition to the risks associated with investments in fixed-income securities generally (for example, credit, liquidity and valuation risk), mortgage-related and asset-backed securities are subject to the risks of the mortgages and assets underlying the securities as well as prepayment risk, the risk that the securities may be prepaid and result in the reinvestment of the prepaid amounts in securities with lower yields than the prepaid obligations. Conversely, there is a risk that an unexpected rise in interest rates will extend the life of a mortgage-related or asset-backed security beyond the expected prepayment time, typically reducing the security’s value. The Fund also may incur a loss when there is a prepayment of securities that were purchased at a premium. The Fund’s investments in other asset-backed securities are subject to risks similar to those associated with mortgage-related securities, as well as additional risks associated with the nature of the assets and the servicing of those assets.Non-Diversification Risk: Compared with other mutual funds, the Fund may invest a greater percentage of its assets in a particular issuer and may invest in fewer issuers. Therefore, the Fund may have more risk because changes in the value of a single security or the impact of a simple economic, political or regulatory occurrence may have a greater adverse impact on the Fund’s NAV.

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Fund Summary Short Exposure Risk: A short exposure through a derivative may present various risks, including credit/counterparty risk and leverage risk. If the value of the asset, asset class or index on which the Fund has obtained a short investment exposure increases, the Fund will incur a loss. Unlike a direct cash investment like a stock, bond or exchange-traded fund, where the potential loss is limited to the purchase price, the potential risk of loss from a short exposure is theoretically unlimited.Risk/Return Bar Chart and TableBecause the Fund has not been in existence for a full calendar year, information related to the Fund’s performance, including a bar chart showing annual returns, has not been included in this Prospectus. The performance information provided by the Fund in the future will give some indication of the risks of an investment in the Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns compare against those of a broad measure of market performance.ManagementInvestment AdviserLoomis, Sayles & Company, L.P.Portfolio ManagersMatthew J. Eagan, Vice President of the Adviser, has served as co-portfolio manager of the Fund since December 2010.Kevin Kearns, Vice President of the Adviser, has served as co-portfolio manager of the Fund since December 2010.Todd P. Vandam, Vice President of the Adviser, has served as co-portfolio manager of the Fund since December 2010.Purchase and Sale of Fund SharesThe following chart shows the investment minimums for various types of accounts:

Type of Account	Minimum Initial Purchase	Minimum Subsequent Purchase
Any account other than those listed below	$2,500	$100
For shareholders participating in Natixis Funds’ Investment Builder Program	$1,000	$50
For Traditional IRA, Roth IRA, Rollover IRA, SEP-IRA and Keogh plans using the Natixis Funds’ prototype document (direct accounts, not held through intermediary)	$1,000	$100
Coverdell Education Savings Accounts	$500	$100

The Fund’s shares are available for purchase (and are redeemable on any business day) through your investment dealer, directly from the Fund by writing to the Fund at Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, by exchange, by wire, by internet at ga.natixis.com, through the Automated Clearing House system, or, in the case of redemptions, by telephone at 800-225-5478 or by the Systematic Withdrawal Plan.Tax InformationFund distributions are generally taxable to you as ordinary income or capital gain, except for distributions to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax law generally.Payments to Broker-Dealers and Other Financial IntermediariesIf you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of the Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

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Fund Summary

Loomis Sayles Multi-Asset Real Return Fund

Investment GoalThe Fund seeks to maximize real returns consistent with prudent investment management.Fund Fees & Expenses The following table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in the Natixis Fund Complex. More information about these and other discounts is available from your financial professional and in the section “How Sales Charges Are Calculated” on page 66 of the Prospectus and on page 99 in the section “Reduced Sales Charges” of the Statement of Additional Information (“SAI”).

Shareholder Fees(fees paid directly from your investment)	Class A	Class C
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	4.50%	None
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, as applicable)	None	1.00%
Redemption fees	None	None

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)	Class A	Class C
Management fees	0.75%	0.75%
Distribution and/or service (12b-1) fees	0.25%	1.00%
Other expenses (estimated for the current fiscal year)	0.88%	0.88%
Acquired Fund Fees and Expenses (estimated for the current fiscal year)	0.05%	0.05%
Total annual fund operating expenses	1.93%	2.68%
Fee waiver and/or expense reimbursement1	0.53%	0.53%
Total annual fund operating expenses after fee waiver and/or expense reimbursement	1.40%	2.15%

ExampleThis example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first year and on the Total Annual Fund Operating Expenses for the remaining years. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	Class A	Class C
		If shares are redeemed	If shares are not redeemed
1 year	$586	$318	$218
3 years	$980	$782	$782

1 Loomis, Sayles & Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.35% and 2.10% of the Fund’s average daily net assets for Class A and C shares, respectively, exclusive of brokerage expenses, interest expense, taxes, Acquired Fund Fees and Expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 1.35% and 2.10% of the Fund’s average daily net assets for Class A and C shares, respectively. The Fund will not be obligated to repay any such waived/reimbursed fees or expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed.

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Fund Summary Portfolio TurnoverThe Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During its most recently ended fiscal year, the Fund’s portfolio turnover rate was 139% of the average value of its portfolio covering the period from September 30, 2010 through December 31, 2010.Investments, Risks and PerformancePrincipal Investment Strategies The Fund will pursue its investment goal primarily through exposure to investments in fixed-income securities, equity securities, currencies and commodity-linked instruments. The Fund expects that its exposure to these asset classes will often be obtained substantially through the use of derivative instruments. The Fund is designed for investors seeking “real returns” (i.e., total returns that exceed the rate of inflation over a full market cycle regardless of market conditions). Although the Fund seeks positive total returns over time, the Fund’s investment returns may be volatile over short periods of time. The Fund may outperform the overall securities market during periods of flat or negative market performance and may underperform during periods of strong market performance. There can be no assurance that the Fund’s returns over time or during any period will be positive or that the Fund will provide returns in excess of inflation over time or during any particular period. The Fund does not have limits on the duration of its portfolio, and the Fund’s duration will change over time.In selecting investments for the Fund, the Adviser seeks to draw on its macroeconomic research in global inflationary cycles to identify and to implement investment opportunities that it believes will outpace inflation in a variety of inflationary environments. Using a global asset allocation analysis, the portfolio managers seek to identify the relative return potential of various asset classes. This analysis is intended to provide the foundation for weighting the asset classes as a whole to develop a portfolio with superior risk and return characteristics in the view of the Adviser. The Adviser expects to use a bottom-up investment process to generate investment ideas consistent with the expectations for the asset classes. This will utilize the Adviser’s robust research resources, which include, but are not limited to, fundamental and quantitative capabilities. Additionally, the portfolio managers will use risk management tools to construct the portfolio and manage risk and volatility on an ongoing basis with an objective of targeting a relatively stable level of annualized volatility for the Fund’s overall portfolio. The portfolio management team expects to actively evaluate each investment idea based upon its return potential, its level of risk and its fit within the team’s overall macro strategy when deciding whether to buy or sell investments.The Fund will pursue its investment goal by obtaining long investment exposures through direct cash investments and derivatives and short investment exposures substantially through derivatives. A “long” investment exposure is an investment that rises in value with a rise in the value of an asset, asset class or index and declines in value with a decline in the value of that asset, asset class or index. A “short” investment exposure is an investment that rises in value with a decline in the value of an asset, asset class or index and declines in value with a rise in the value of that asset, asset class or index. The Fund’s long and short investment exposures may, at times, each reach 100% of the assets invested in the Fund (excluding instruments primarily used for duration management and short-term investments (such as cash and money market instruments)), although these exposures may be higher or lower at any given time.Fixed-Income Investments. Under normal market conditions, the Fund expects to invest at least 50% of its total assets in fixed-income securities and derivatives that have returns related to the returns on fixed-income securities. The Fund may invest in a broad range of U.S. and non-U.S. fixed-income securities, including, but not limited to, corporate bonds, municipal securities, U.S. and non-U.S. government securities (including their agencies, instrumentalities and sponsored entities), securities of supranational entities, partnership securities, commercial and residential mortgage-backed securities, other mortgage-related securities (such as adjustable rate mortgage securities), asset-backed securities, bank loans, depositary receipts, convertible bonds, Rule 144A securities, real estate investment trusts (“REITs”), zero-coupon securities, step coupon securities, stripped securities, pay-in-kind securities, inflation-linked bonds, variable and floating rate securities, when-issued securities, private placements, privatizations, hybrid instruments, structured investments, repurchase agreements and commercial paper. The Fund may invest in securities of any maturity, market sector or credit quality, including below investment-grade fixed-income securities (also known as “junk bonds”). Below investment-grade fixed-income securities are below investment-grade quality (i.e., none of the three major rating agencies (Moody’s Investors Service, Inc. (“Moody’s”), Fitch Investors Service, Inc. (“Fitch”) or Standard & Poor’s Ratings Group (“S&P”)) have rated the securities in one of their top four ratings categories) or, if the security is unrated, the Adviser has determined it to be of comparable quality.Equity Investments. Although the Fund expects that in normal market conditions it will have net long equity exposures, in the Adviser’s sole discretion the Fund may have net short equity exposures of up to 35% of the Fund’s total assets and gross short equity exposures of up to 70% of the Fund’s total assets. For these purposes, a short equity position is a position that will decline in value with a rise of the equity markets. A gross short equity position represents the total of all short positions without regard to any offsetting long positions. A net short equity position is the total of all short positions offset by any long positions (e.g., a direct investment in a stock). The Adviser may have net short equity exposures for investment or hedging purposes, including but not limited to macro hedges to protect the Fund’s entire portfolio or more targeted hedges to neutralize specific components of the Fund’s equity market exposure. The Fund may invest in a broad range of U.S. and non-U.S. equity securities, including, but not limited to, common and preferred stocks, convertible preferred stocks, depositary receipts, warrants, rights, Rule 144A securities, private placements, privatizations, hybrid instruments,

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Fund Summary equity-linked securities and other equity interests. The Fund may invest in securities of issuers of any market capitalization. In addition to direct investment in securities and other instruments, the Fund may invest in other funds, including exchange-traded funds (“ETFs”). The Fund may invest in REITs and U.S. and non-U.S. real estate companies.Non-U.S. Currency Investments. Under normal market conditions, the Fund expects to invest up to 30% of its total assets in investments in non-U.S. currencies, securities denominated in non-U.S. currencies and related derivative transactions. The Fund may engage in a broad range of transactions involving non-U.S. currencies, including, but not limited to, purchasing and selling forward currency exchange contracts in non-U.S. currencies, investing in non-U.S. currency futures contracts, investing in options on non-U.S. currencies and non-U.S. currency futures, cross-hedging between two or more currencies, investing directly in non-U.S. currencies and investing in securities denominated in non-U.S. currencies, including securities of emerging market issuers. The Fund may engage in non-U.S. currency transactions for investment or for hedging purposes. Currency positions that are intended to hedge the Fund’s non-U.S. currency exposure (i.e., currency positions that are not made for investment purposes) will offset positions in the same currency that are made for investment purposes when calculating the 30% limitation in investments in non-U.S. currency investments because the Fund believes that hedging a currency position is likely to negate some or all of the currency risk associated with the original currency position.Commodity Investments. Under normal market conditions, the Fund expects that up to 25% of its total assets will be invested in commodity-linked instruments. Commodities are assets that have tangible properties, such as oil, metals, and agricultural products. A “commodity-linked instrument” is an instrument whose value is linked to the price movement of a commodity, a commodity index, or a commodity option or futures contract. An investment in a commodity-linked instrument does not generally provide a claim to the tangible underlying commodity. The Fund may invest in a broad range of commodity-linked instruments, including, but not limited to, commodity-linked derivatives (such as commodity-linked swaps, futures, options or options on futures), commodity-linked debt (including leveraged or unleveraged notes that are derivative debt instruments with principal and/or coupon payments linked to the performance of commodities) or commodity-linked ETFs (i.e., ETFs that have their value derived from the price movement of an underlying commodity). The Fund also may invest in equity and fixed-income securities of issuers in commodity-related industries. These investments will not be counted toward the 25% limitation on investments in commodity-linked instruments, but rather will be considered investments in equity securities or fixed-income securities, as appropriate. The Fund expects to obtain its investment exposure to commodity-linked instruments in whole or in significant part indirectly by investing in a wholly-owned subsidiary organized under the laws of the Cayman Islands (the “Commodity Subsidiary”), which is advised by the Adviser and will invest primarily in commodity-linked instruments and fixed-income securities and other investments that serve as collateral for its derivative positions. The Fund may invest up to 25% of its total assets in the Commodity Subsidiary.Derivative Investments. The Fund may invest substantially in a broad range of derivative instruments for both hedging and investment purposes, including, but not limited to, futures contracts (such as futures that provide for physical delivery, treasury futures, single stock futures, and index futures), forward contracts, options (such as options on futures contracts, options on securities, options on securities indices, interest rate/bond options, currency options, options on swaps and exchange-traded and over-the-counter options), warrants (such as index warrants), swap transactions (such as interest rate swaps, total return swaps, index swaps and equity swaps), structured notes, foreign currency transactions, commodity-linked derivatives and credit default swaps. Derivative instruments (such as those listed above) can be used to acquire or to transfer the risk and returns of a security without buying or selling the security. The Fund’s strategy may be highly dependent on the use of derivatives, and to the extent that they become unavailable or unattractive the Fund may be unable to fully implement its investment strategy.The Fund is non-diversified, which means that it is not limited to a percentage of assets that it may invest in any one issuer.The Fund expects to engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance.The percentage limitations set forth herein are not investment restrictions and the Fund may exceed these limits from time to time. In addition, when calculating these exposures, the Fund may use the notional value or an adjusted notional value of a derivative in order to reflect what the Adviser believes to be the most accurate assessment of the Fund’s real economic exposure.Principal RisksThe principal risks of investing in the Fund are summarized below. The Fund does not represent a complete investment program. You may lose money by investing in the Fund.Agency Securities Risk: Agency securities are subject to fixed-income securities risk. Certain debt securities issued or guaranteed by agencies of the U.S. government are guaranteed as to the payment of principal and interest by the relevant entity but have not been backed by the full faith and credit of the U.S. government. Instead, they have been supported only by the discretionary authority of the U.S. government to purchase the agency’s obligations. An event affecting the guaranteeing entity could adversely affect the payment of principal or interest or both on the security and, therefore, these types of securities should be considered to be riskier than U.S. government securities.

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Fund Summary Below Investment-Grade Fixed-Income Securities Risk: This is the risk that the Fund’s investments in below investment-grade fixed-income securities, also known as “junk bonds,” may be subject to greater risks than other fixed-income securities, including being subject to greater levels of interest rate risk, credit risk (including a greater risk of default) and liquidity risk. The ability of the issuer to make principal and interest payments is predominantly speculative for below investment-grade fixed-income securities.Commodity Risk: This is the risk that exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of physical commodities or commodity-linked derivative instruments may be affected by changes in overall market movements, commodity price volatility, changes in interest rates, currency fluctuations, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund.
Commodity Subsidiary Risk: Investing in the Commodity Subsidiary will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments, such as commodity investments risk. The Commodity Subsidiary is not registered under the Investment Company Act of 1940 (the “1940 Act”) and is not subject to all of the investor protections of the 1940 Act. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its shareholders.Credit/Counterparty Risk: Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.Currency Risk: Fluctuations in the exchange rates between different currencies may negatively affect an investment. The Fund may be subject to currency risk because it may invest a significant portion of its assets in currency-related instruments, such as forward currency exchange contracts, foreign currency futures contracts, options on foreign currencies and foreign currency futures, cross-currency instruments (such as swaps) and direct investments in foreign currencies. The Fund also is subject to currency risk because it may invest in securities or other instruments denominated in, or receive revenues in, foreign currencies. The Adviser may elect not to hedge currency risk, which may cause the Fund to incur losses that would not have been incurred had the risk been hedged.Derivatives Risk: Derivatives are subject to changes in the value of the underlying asset or indices on which such transactions are based. There is no guarantee that the use of derivatives will be effective or that suitable transactions will be available. Even a small investment in derivatives may give rise to leverage risk and can have a significant impact on the Fund’s exposure to securities markets values, interest rates or currency exchange rates. It is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. The use of derivatives for other than hedging purposes may be considered a speculative activity, and involves greater risks than are involved in hedging. The Fund’s use of derivatives, such as futures, forward contracts, foreign currency transactions and commodity-linked derivatives involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward contracts and other OTC derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices, liquidity risk, allocation risk and the risk of losing more than the initial margin required to initiate derivatives positions. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. There can be no assurance that the Fund’s derivative counterparties will not experience financial difficulties, possibly resulting in losses to the Fund.Emerging Markets Risk: Investing in emerging markets companies, which may be smaller and have shorter operating histories than companies in developed markets, involves risks in addition to, and greater than, those generally associated with investing in companies in developed foreign markets. The extent of economic development, political stability, market depth, infrastructure, capitalization and regulatory oversight in emerging market economies is generally less than in more developed markets.Equity Securities Risk: You may lose money on your investment due to unpredictable drops in a stock’s value or periods of below-average performance in a given stock or in the stock market as a whole. Rule 144A equity securities may be less liquid than other equity securities. Small-capitalization and emerging growth companies may be subject to more abrupt price movements, limited markets and less liquidity than larger, more established companies, which could adversely affect the value of the Fund’s portfolio.

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Fund Summary Fixed-Income Securities Risk: Fixed-income securities are subject to credit risk, interest rate risk and liquidity risk. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. You may lose money on your investment due to unpredictable drops in a security’s value or periods of below-average performance in a given security or in the securities market as a whole. In addition, an economic downturn or period of rising interest rates could adversely affect the market of these securities and reduce the Fund’s ability to sell them.Foreign Securities Risk: The Fund’s investments in foreign securities are subject to foreign currency fluctuations. Foreign securities may be subject to higher volatility than U.S. securities, varying degrees of regulation and limited liquidity. Investments in foreign securities may be subject to greater political, economic, environmental, credit and information risks.Inflation/Deflation Risk: Inflation risk is the risk that the value of assets or income from investments will be worth less in the future as inflation decreases the present value of future payments. Deflation risk is the risk that prices throughout the economy decline over time (the opposite of inflation). Deflation may have an adverse effect on the creditworthiness of issuers and may make issuer default more likely, which may result in a decline in the value of the Fund’s portfolio. Because the Fund seeks positive returns that exceed the rate of inflation over time, if the portfolio managers’ inflation forecasts are incorrect, the Fund may be more severely impacted than other funds.Interest Rate Risk: Changes in interest rates may cause the value of the Fund’s investments to decrease. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment.Investments in Other Investment Companies Risk: The Fund will indirectly bear the management, service and other fees of the other investment companies in which it invests in addition to its own expenses.Issuer Risk: The value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.Leverage Risk: Use of derivative instruments may involve leverage. Leverage is the risk associated with securities or practices that multiply small index, market or asset price movements into larger changes in value. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. The use of leverage will increase the impact of gains and losses on the Fund’s returns, and may lead to significant losses if investments are not successful. However, the Adviser will attempt to ensure that at all times, the Fund has sufficient liquid assets to enable it to satisfy its obligations under its derivative contracts.Liquidity Risk: Liquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Illiquid investments also may be difficult to value.Management Risk: A strategy used by the Fund’s portfolio managers may fail to produce the intended result.Market Risk: The market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions. The Fund’s portfolio managers will attempt to reduce this risk by implementing various volatility management strategies and techniques. However, there is no guarantee that such strategies and techniques will produce the intended result.Mortgage-Related and Asset-Backed Securities Risk: In addition to the risks associated with investments in fixed-income securities generally (for example, credit, liquidity and valuation risk), mortgage-related and asset-backed securities are subject to the risks of the mortgages and assets underlying the securities as well as prepayment risk, the risk that the securities may be prepaid and result in the reinvestment of the prepaid amounts in securities with lower yields than the prepaid obligations. Conversely, there is a risk that an unexpected rise in interest rates will extend the life of a mortgage-related or asset-backed security beyond the expected prepayment time, typically reducing the security’s value. The Fund also may incur a loss when there is a prepayment of securities that were purchased at a premium. The Fund’s investments in other asset-backed securities are subject to risks similar to those associated with mortgage-related securities, as well as additional risks associated with the nature of the assets and the servicing of those assets.Non-Diversification Risk: Compared with other mutual funds, the Fund may invest a greater percentage of its assets in a particular issuer and may invest in fewer issuers. Therefore, the Fund may have more risk because changes in the value of a single security or the impact of a simple economic, political or regulatory occurrence may have a greater adverse impact on the Fund’s NAV.Short Exposure Risk: A short exposure through a derivative may present various risks, including credit/counterparty risk and leverage risk. If the value of the asset, asset class or index on which the Fund has obtained a short investment exposure increases, the Fund will incur a loss. Unlike a direct cash investment like a stock, bond or exchange-traded fund, where the potential loss is limited to the purchase price, the potential risk of loss from a short exposure is theoretically unlimited.

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Fund Summary Risk/Return Bar Chart and TableBecause the Fund has not been in existence for a full calendar year, information related to the Fund’s performance, including a bar chart showing annual returns, has not been included in this Prospectus. The performance information provided by the Fund in the future will give some indication of the risks of an investment in the Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns compare against those of a broad measure of market performance.ManagementInvestment AdviserLoomis, Sayles & Company, L.P.Portfolio ManagersKevin Kearns, Vice President of the Adviser, has served as co-portfolio manager of the Fund since September 2010.
David Rolley, Vice President of the Adviser, has served as co-portfolio manager of the Fund since September 2010.Laura Sarlo, Vice President of the Adviser, has served as co-portfolio manager of the Fund since September 2010.
Purchase and Sale of Fund SharesThe following chart shows the investment minimums for various types of accounts:

Type of Account	Minimum Initial Purchase	Minimum Subsequent Purchase
Any account other than those listed below	$2,500	$100
For shareholders participating in Natixis Funds’ Investment Builder Program	$1,000	$50
For Traditional IRA, Roth IRA, Rollover IRA, SEP-IRA and Keogh plans using the Natixis Funds’ prototype document (direct accounts, not held through intermediary)	$1,000	$100
Coverdell Education Savings Accounts	$500	$100

The Fund’s shares are available for purchase (and are redeemable on any business day) through your investment dealer, directly from the Fund by writing to the Fund at Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, by exchange, by wire, by internet at ga.natixis.com, through the Automated Clearing House system, or, in the case of redemptions, by telephone at 800-225-5478 or by the Systematic Withdrawal Plan.Tax InformationFund distributions are generally taxable to you as ordinary income or capital gain, except for distributions to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax law generally.Payments to Broker-Dealers and Other Financial IntermediariesIf you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of the Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

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Investment Goals, Strategies and Risks More Information About the Funds ASG Diversifying Strategies FundInvestment GoalThe Fund pursues an absolute return strategy that seeks to provide capital appreciation. The secondary goal of the Fund is to achieve these returns while maintaining a low or negative correlation over time with the returns of major equity indices. The investment goals are non-fundamental and may be changed without shareholder approval. The Fund will provide 60 days’ prior notice to shareholders before changing the investment goals.Principal Investment StrategiesThe Fund seeks to generate positive absolute returns over time rather than track the performance of any particular index. In selecting investments for the Fund, the Adviser uses multiple quantitative investment models and strategies (for example, relative value fixed income strategies and multi-market trend strategies) each of which has an absolute return objective. Each model and strategy may involve a broad range of market exposures. These models may include, for example, models that base investment decisions on fixed income spreads and models which seek to identify trends across various asset classes. The Adviser uses quantitative and qualitative judgments in the determination of weighting among the models and strategies. Although the Fund seeks positive absolute returns over time, it is likely that the Fund’s investment returns may be volatile over short periods of time. The Fund may outperform the overall securities market during periods of flat or negative market performance and may underperform during periods of strong market performance. There can be no assurance that the Fund’s returns over time or during any period will be positive or that the Fund will outperform the overall security markets over time or during any particular period.Under normal market conditions, the Adviser typically will make extensive use of a variety of derivative instruments, in particular futures and forward contracts, to capture the exposures suggested by its absolute return strategies while also adding value through volatility management and correlation management. These market exposures, which are expected to change over time, may include, for example, exposures to the returns of equity and fixed income securities, currencies and commodities. The Adviser will scale the notional exposure of the Fund’s futures and currency forward positions with the objective of targeting a relatively stable level of annualized volatility for the Fund’s overall portfolio. The Adviser may also use exchange-traded futures contracts on broad U.S. or international equity indices to decrease any undesired correlation with the returns of the major equity indices. The Adviser will have great flexibility to allocate the Fund’s derivatives exposure among various securities, indices, currencies, commodities and other instruments, and the amount of the Fund’s assets that may be allocated to derivative strategies and among these various instruments is expected to vary over time. When buying and selling securities and other instruments for the Fund, and in determining the amount of assets to be allocated to the Money Market Portion (as defined below), the Adviser will also consider the following factors: (i) the Fund’s obligations under its various derivative positions; (ii) redemption requests; (iii) yield management; (iv) credit management and (v) volatility management. The Fund may invest in non-U.S. securities and instruments and securities and instruments traded outside the United States and expects to engage in non-U.S. currency transactions.Under normal market conditions, it is expected that no more than 25% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to the Fund’s derivative transactions. The notional value of the Fund’s derivative investments, however, will generally exceed 25% of the Fund’s total assets. The Fund expects that under normal market conditions it will invest at least 75% of its total assets in money market and other short-term, high quality securities managed by the Subadviser (the “Money Market Portion”), although the Fund may invest less than this percentage. The Adviser will determine the percentage of the Fund’s assets that will be invested in the Money Market Portion at any time. The assets allocated to the Money Market Portion will be used primarily to support the Fund’s investments in derivatives and similar instruments and, secondarily, to provide the Fund with incremental income and liquidity. Although the Fund will invest a significant portion of its assets in money market instruments, the Fund is not a “money market” fund and the value of the Money Market Portion as well as the value of the Fund’s shares may decrease. The Fund is not subject to the portfolio quality, maturity and net asset value requirements applicable to money market funds, and the Fund will not seek to maintain a stable net asset value.The Subadviser will only invest the assets of the Money Market Portion in high quality securities which are denominated in U.S. dollars, and will select securities for investment based on various factors, including the security’s maturity and rating. The Subadviser will invest primarily in (i) short-term obligations issued or guaranteed by the United States government, its agencies or instrumentalities (“U.S. Government Obligations”); (ii) securities issued by foreign governments, their political subdivisions, agencies or instrumentalities; (iii) certificates of deposit, time deposits and bankers’ acceptances issued by domestic banks, foreign branches of domestic banks, foreign subsidiaries of domestic banks, and domestic and foreign branches of foreign banks; (iv) variable amount master demand notes; (v) participation interests in loans extended by banks to companies; (vi) commercial paper or similar debt obligations; and (vii) repurchase agreements.

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Investment Goals, Strategies and Risks Although the Fund does not intend to invest in physical commodities directly, the Fund expects to obtain investment exposure to commodity-related derivatives through a wholly-owned subsidiary organized under the laws of the Cayman Islands that will make commodity-related investments. Under normal market conditions, no more than 10% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to these transactions.The Fund will concentrate its investments in the financial services industry, which means it will normally invest at least 25% of its total assets in securities and other obligations (for example, bank certificates of deposit) of issuers in such industry.The Fund may engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance. Due to the short-term nature of the Fund’s investment portfolio, the Fund does not calculate a portfolio turnover rate. The Fund’s trading in derivatives is active and frequent. Active and frequent trading of derivatives, like active and frequent trading of securities, will result in transaction costs which reduce fund returns.The percentage limitations set forth in this prospectus are not investment restrictions and the Fund may exceed these limits from time to time. As a temporary defensive measure, the Fund may hold any portion of its assets in cash (U.S. dollars, foreign currencies or multinational currency units) and/or invest in money market instruments or high quality debt securities and take other defensive positions as the Adviser deems appropriate. The Fund may miss certain investment opportunities if it uses defensive strategies and thus may not achieve its investment goals.Principal Investment RisksThe Fund has principal investment strategies that come with inherent risks. The principal risks of investing in the Fund are summarized in the Fund Summary under “Principal Investment Risks.” The Fund does not represent a complete investment program. The following is a list of risks to which the Fund may be subject because of its investments in various types of securities or engagement in various practices. Because of the Fund’s extensive use of derivative instruments, the Fund will be subject to many of the risks below indirectly through its derivative transactions rather than directly through investment in the actual securities themselves. For example, to the extent the Fund enters into a futures contract on an equity index, the Fund will be subject to “equity securities” risk.Allocation and Correlation RiskThis is the risk that the Adviser’s judgments about, and allocations between, asset classes and market exposures may adversely affect the Fund’s performance. This risk can be increased by the use of derivatives to increase allocations to various market exposures. This is because derivatives can create investment leverage, which will magnify the impact to the Fund of its investment in any underperforming market exposure. In addition, the Adviser’s judgment about the correlation of various market exposures to the returns of major equity indices (and to each other) may be incorrect, adversely affecting performance. This risk may be particularly acute during periods of market turmoil, when previously uncorrelated asset classes and market exposures often become more correlated. There is no guarantee that the Adviser will be successful in managing correlation with major equity indices, and, as a result, the Fund’s returns may be correlated with major equity indices to a greater extent than desired during any period and over time. Furthermore, because the Fund intends to maintain a low to negative correlation to the returns of major equity indices, during periods when returns in such markets increase, the Fund’s returns will not necessarily reflect the increase. Commodity RiskThis is the risk that exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of physical commodities or commodity-linked derivative instruments may be affected by changes in overall market movements, commodity price volatility, changes in interest rates, currency fluctuations or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund.Commodity Subsidiary RiskInvesting in a wholly-owned commodity subsidiary organized under the laws of a non-U.S. jurisdiction, such as the Commodity Subsidiary, will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments. The Commodity Subsidiary is not registered under the 1940 Act, and unless otherwise noted, is not subject to all of the investor protections of the 1940 Act. However, the Commodity Subsidiary is wholly-owned and controlled by the Fund and therefore, is unlikely to take action contrary to the interests of the Fund or its shareholders. In monitoring compliance with its investment restrictions, the Fund will consider the assets of the Commodity Subsidiary to be assets of the Fund. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its

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Investment Goals, Strategies and Risks shareholders. For example, the Cayman Islands do not currently impose any income, corporate or capital gains tax, estate duty, inheritance tax, gift tax or withholding tax on the Commodity Subsidiary. If Cayman Islands law changes such that the Commodity Subsidiary is required to pay Cayman Islands taxes, the Fund’s shareholders may suffer decreased investment returns.Concentrated Investment RiskThe Fund is particularly vulnerable to events affecting companies in the financial services industry because the Fund concentrates its investments in securities and other obligations of issuers in such industry. Examples of risks affecting the financial services industry include changes in governmental regulation, issues relating to the availability and cost of capital, changes in interest rates and/or monetary policy and price competition. In addition, financial services companies are often more highly leveraged than other companies, making them inherently riskier. As a result, the Fund’s shares may rise and fall in value more rapidly and to a greater extent than shares of a fund that does not concentrate or focus in a particular industry or economic sector. The financial services industry has recently experienced high volatility and a number of issuer failures and the value of many of these securities has significantly declined. As a result, the risk associated with investing in the Fund may be increased as compared to a fund that does not concentrate in the financial services industry.Credit/Counterparty Risk
Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments. Foreign securities may be subject to increased credit risk because of the potential difficulties of requiring foreign entities to honor their contractual commitments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.Currency RiskThis is the risk that fluctuations in exchange rates between the U.S. dollar and foreign currencies and between various foreign currencies may cause the value of the Fund’s investments to decline. The market for some (or all) currencies may from time to time have low trading volume and become illiquid, which may prevent the Fund from effecting positions or from promptly liquidating unfavorable positions in such markets, thus subjecting the Fund to substantial losses. Derivatives RiskDerivatives are financial contracts whose value depends upon or is derived from the value of an underlying asset, reference rate or index. Examples of derivatives include futures contracts, swaps and forward transactions. The Fund expects to make extensive use of derivative transactions, and anticipates that the majority of its returns will be attributable to its derivative transactions. Therefore, the performance of the Fund will depend to a great extent on the success of the Adviser’s derivative strategies. This use of derivatives for these purposes entails greater risk than using derivatives solely for hedging purposes, and may be considered a speculative activity. The Fund’s use of derivatives, such as futures, forward contracts, foreign currency transactions and commodity-linked derivatives, involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward currency contracts and other OTC traded derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices and the risk of losing more than the initial margin required to initiate derivatives positions. In addition, although the Adviser will attempt to ensure that at all times the Fund has sufficient liquid assets to cover its obligations under its derivative contracts, these obligations will often be volatile and it is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price.Equity Securities RiskThe value of your investment in the Fund is based on the market value (or price) of the securities the Fund holds. You may lose money on your investment due to unpredictable drops in the value of a security or periods of below-average performance in a given stock or the stock market as a whole. The value of the Fund’s investments in equity securities is subject to the risks of unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. The market value of a security can change daily due to political, economic and other events that affect the securities markets generally, as well as those that affect particular companies or governments. These price movements, sometimes called volatility, will vary depending on the types of securities the Fund owns and the markets in which they trade. Historically, the equity markets have moved in cycles, and the value of the Fund’s equity securities may fluctuate drastically from day to day. Individual companies may report poor results or be negatively affected by industry and/or economic trends and developments. The prices of securities issued by such companies may suffer a decline in response to such trends and developments. Equity securities may include common stocks, preferred stocks, warrants, securities

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Investment Goals, Strategies and Risks convertible into common or preferred stocks and other equity-like interests in an entity. Common stocks represent an equity or ownership interest in an issuer. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock. Equity securities may take the form of stock in corporations, real estate investment trusts (“REITs”) or other trusts and other similar securities. Foreign Securities RiskThis is the risk associated with investments in issuers located in foreign countries. The Fund’s investments in foreign securities may experience more rapid and extreme changes in value than investments in securities of U.S. issuers. The securities markets of many foreign countries are relatively small, with a limited number of issuers and a small number of securities. In addition, foreign companies often are not subject to the same degree of regulation as U.S. companies. Reporting, accounting and auditing standards of foreign countries differ, in some cases significantly, from U.S. standards. Nationalization, expropriation or confiscatory taxation, currency blockage, political changes or diplomatic developments can cause the value of the Fund’s non-U.S. investments to decline. In the event of nationalization, expropriation or other confiscation, the Fund could lose its entire foreign investment. Investments in emerging markets may be subject to these risks to a greater extent than those in more developed markets. These risks also apply to securities of foreign issuers traded in the United States or through depositary receipt programs such as American Depositary Receipts. Interest Rate RiskThis is the risk that changes in interest rates will affect the value of the Fund’s investments in fixed-income securities, such as bonds, notes, asset-backed securities and other income-producing securities and derivatives. Fixed-income securities are obligations of the issuer to make payments of principal and/or interest on future dates. Increases in interest rates may cause the value of the Fund’s investments to decline. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment. Generally, the value of fixed-income securities, including short-term fixed-income securities, rises when prevailing interest rates fall and falls when interest rates rise. A significant change in interest rates could cause the Fund’s share price (and the value of your investment) to change. Issuer RiskThe value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.Leverage RiskThis is the risk associated with securities or practices (e.g., borrowing and the use of certain derivatives) and investment in certain types of derivatives that multiply small index or market movements into larger changes in value. Use of derivative instruments may involve leverage. Leverage magnifies the potential for gain and the risk of loss. As a result, a relatively small decline in the value of the underlying investments could result in a relatively large loss. Although the Adviser will seek to manage the Fund’s risk from the leverage associated with derivative investments by closely monitoring the volatility of such investments, the Adviser may not be successful in this respect.Liquidity RiskLiquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Derivatives and securities that involve substantial interest rate or credit risk tend to involve greater liquidity risk. In addition, liquidity risk tends to increase to the extent the Fund invests in securities whose sale may be restricted by law or by contract, such as Rule 144A securities. Investment in derivatives may be especially illiquid when compared to other securities, especially during periods of market stress. Similarly, the market for money market and similar instruments may become illiquid at certain times. At these times, it may be difficult to sell securities. Illiquid investments also may be difficult to value.Management RiskManagement risk is the risk that the Adviser’s or Subadviser’s investment techniques could fail to achieve the Fund’s objective and could cause your investment in the Fund to lose value. The Fund is subject to management risk because the Fund is actively managed. The Adviser and Subadviser will apply their investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that such decisions will produce the desired results. For example, securities that the Adviser or Subadviser expect to appreciate in value may, in fact, decline. Similarly, in some cases, derivative and other investment techniques may be unavailable or the Adviser or Subadviser may determine not to use them, even under market conditions where their use could have benefited the Fund. The Adviser utilizes various proprietary quantitative models to identify investment opportunities. There is a possibility that one or all of the quantitative models may fail to identify profitable opportunities at any time. Furthermore, they may incorrectly identify opportunities and these misidentified opportunities may lead to substantial losses. The Adviser’s judgments about the weightings among various models and strategies may be incorrect, adversely affecting performance.Market RiskThis is the risk that the value of the Fund’s investments will change as financial markets fluctuate and that prices overall may decline. The value of a company’s securities may fall as a result of factors that directly relate to that company, such as decisions made by its management or lower demand for the company’s products or services. A security’s value also may fall because of factors affecting not just the company, but companies in its industry or in

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Investment Goals, Strategies and Risks a number of different industries, such as increases in production costs. In addition, the value of the Fund’s derivative investments may fall even when the value of the securities markets is rising. The value of a company’s securities also may be affected by changes in financial market conditions, such as changes in interest rates or currency exchange rates. U.S. Government Securities RiskInvestments in certain U.S. government securities may not be supported by the full faith and credit of the U.S. government. Accordingly, no assurance can be given that the U.S. government will provide financial support to U.S. government agencies, instrumentalities or sponsored enterprises if it is not obligated to do so by law. The maximum potential liability of the issuers of some U.S. government securities held by the Fund may greatly exceed their current resources, and it is possible that these issuers will not have the funds to meet their payment obligations in the future. In such a case, the Fund would have to look principally to the agency, instrumentality or sponsored enterprise issuing or guaranteeing the security for ultimate repayment, and the Fund may not be able to assert a claim against the U.S. government itself in the event the agency, instrumentality or sponsored enterprise does not meet its commitment. Concerns about the capacity of the U.S. government to meet its obligations may raise the interest rates payable on its securities, negatively impacting the price of such securities already held by the Fund.Valuation RiskThis is the risk that the Fund has valued certain securities at a price different from the price at which they can be sold. This risk may be especially pronounced for investments, such as derivatives, which may be illiquid or which may become illiquid.

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Investment Goals, Strategies and Risks ASG Global Alternatives Fund Investment Goal The Fund pursues an absolute return strategy that seeks to provide capital appreciation consistent with the risk-return characteristics of a diversified portfolio of hedge funds. The secondary goal of the Fund is to achieve these returns with less volatility than major equity indices. The investment goals are non-fundamental and may be changed without shareholder approval. The Fund will provide 60 days’ prior notice to shareholders before changing the investment goals.Principal Investment Strategies The Fund seeks to achieve long and short exposure to global equity, bond, currency and commodity markets through a wide range of derivative instruments and direct investments. Under normal market conditions, the Adviser typically will make extensive use of derivative instruments, in particular futures and forward contracts on global equity and fixed income securities, securities indices (including both broad- and narrow-based securities indices), currencies, commodities and other instruments. These investments are intended to provide the Fund with risk and return characteristics similar to those of a diversified portfolio of hedge funds.The Fund seeks to generate absolute returns over time rather than track the performance of any particular index of hedge fund returns. In selecting investments for the Fund, the Adviser uses quantitative models to estimate the market exposures that drive the aggregate returns of a diverse set of hedge funds. These market exposures may include, for example, exposures to the returns of stocks, fixed income securities (including U.S. and non-U.S. government securities), currencies and commodities. In estimating these market exposures, the Adviser analyzes the returns of hedge funds included in one or more commercially available databases selected by the Adviser (for example, the Lipper TASS hedge fund database), and seeks to use a variety of derivative instruments to capture such exposures in the aggregate while adding value through dynamic allocation among market exposures and volatility management. The Adviser will have great flexibility to allocate the Fund’s derivatives exposure among various securities, indices, currencies, commodities and other instruments, and the amount of the Fund’s assets that may be allocated to derivative strategies and among these various instruments is expected to vary over time. When buying and selling securities and other instruments for the Fund, and in determining the amount of assets to be allocated to the Money Market Portion (as defined below), the Adviser will also consider the following factors: (i) the Fund’s obligations under its various derivative positions; (ii) redemption requests; (iii) yield management; (iv) credit management and (v) volatility management. The Fund will not invest directly in hedge funds. The Fund may invest in non-U.S. securities and instruments and securities, and instruments traded outside the United States, and expects to engage in non-U.S. currency transactions.Under normal market conditions, it is expected that no more than 25% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to the Fund’s derivative transactions. The notional value of the Fund’s derivative investments, however, will generally exceed 25% of the Fund’s assets. The Fund expects that under normal market conditions it will invest at least 75% of its total assets in money market and other short-term, high quality securities managed by the Subadviser (the “Money Market Portion”), although the Fund may invest less than this percentage. The Adviser will determine the percentage of the Fund’s assets that will be invested in the Money Market Portion at any time. The assets allocated to the Money Market Portion will be used primarily to finance the Fund’s investments in derivatives and similar instruments and, secondarily, to provide the Fund with incremental income and liquidity. Although the Fund will invest a significant portion of its assets in money market instruments, the Fund is not a “money market” fund and the value of the Money Market Portion as well as the value of the Fund’s shares may decrease. The Fund is not subject to the portfolio quality, maturity and net asset value requirements applicable to money market funds, and the Fund will not seek to maintain a stable net asset value.The Subadviser will only invest the assets of the Money Market Portion in high quality securities which are denominated in U.S. dollars, and will select securities for investment based on various factors, including the security’s maturity and rating. The Subadviser will invest primarily in (i) short-term obligations issued or guaranteed by the United States government, its agencies or instrumentalities (“U.S. Government Obligations”); (ii) securities issued by foreign governments, their political subdivisions or agencies or instrumentalities; (iii) certificates of deposit, time deposits and bankers’ acceptances issued by domestic banks, foreign branches of domestic banks, foreign subsidiaries of domestic banks, and domestic and foreign branches of foreign banks; (iv) variable amount master demand notes; (v) participation interests in loans extended by banks to companies; (vi) commercial paper or similar debt obligations; and (vii) repurchase agreements.Although the Fund does not intend to invest in physical commodities directly, the Fund expects to obtain investment exposure to commodity-related derivatives through a wholly-owned subsidiary organized under the laws of the Cayman Islands that will make commodity-related investments. Under normal market conditions, no more than 10% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to these transactions.The Fund will concentrate its investments in the financial services industry, which means it will normally invest at least 25% of its total assets in securities and other obligations (for example, bank certificates of deposit) of issuers in such industry.

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Investment Goals, Strategies and Risks The Fund may engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance. Due to the short-term nature of the Fund’s investment portfolio, the Fund does not calculate a portfolio turnover rate. The Fund’s trading in derivatives is active and frequent. Active and frequent trading of derivatives, like active and frequent trading of securities, will result in transaction costs which reduce fund returns.The percentage limitations set forth in this prospectus are not investment restrictions and the Fund may exceed these limits from time to time. As a temporary defensive measure, the Fund may hold any portion of its assets in cash (U.S. dollars, foreign currencies or multinational currency units) and/or invest in money market instruments or high quality debt securities and take other defensive positions as the Adviser deems appropriate. The Fund may miss certain investment opportunities if it uses defensive strategies and thus may not achieve its investment goals. Principal Investment RisksThe Fund has principal investment strategies that come with inherent risks. The principal risks of investing in the Fund are summarized in the Fund Summary under “Principal Investment Risks.” The Fund does not represent a complete investment program. The following is a list of risks to which the Fund may be subject because of its investments in various types of securities or engagement in various practices. Because of the Fund’s extensive use of derivative instruments, the Fund will be subject to many of the risks below indirectly through its derivative transactions rather than directly through investment in the actual securities themselves. For example, to the extent the Fund enters into a futures contract on an equity index, the Fund will be subject to “equity securities” risk. Commodity RiskThis is the risk that exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of physical commodities or commodity-linked derivative instruments may be affected by changes in overall market movements, commodity price volatility, changes in interest rates, currency fluctuations or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund. Commodity Subsidiary RiskInvesting in a wholly-owned commodity subsidiary organized under the laws of a non-U.S. jurisdiction, such as the Commodity Subsidiary, will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments. The Commodity Subsidiary is not registered under the 1940 Act, and unless otherwise noted, is not subject to all of the investor protections of the 1940 Act. However, the Commodity Subsidiary is wholly-owned and controlled by the Fund and therefore, is unlikely to take action contrary to the interests of the Fund or its shareholders. In monitoring compliance with its investment restrictions, the Fund will consider the assets of the Commodity Subsidiary to be assets of the Fund. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its shareholders. For example, the Cayman Islands do not currently impose any income, corporate or capital gains tax, estate duty, inheritance tax, gift tax or withholding tax on the Commodity Subsidiary. If Cayman Islands law changes such that the Commodity Subsidiary is required to pay Cayman Islands taxes, the Fund’s shareholders may suffer decreased investment returns.Concentrated Investment RiskThe Fund is particularly vulnerable to events affecting companies in the financial services industry because the Fund concentrates its investments in securities and other obligations of issuers in such industry. Examples of risks affecting the financial services industry include changes in governmental regulation, issues relating to the availability and cost of capital, changes in interest rates and/or monetary policy and price competition. In addition, financial services companies are often more highly leveraged than other companies, making them inherently riskier. As a result, the Fund’s shares may rise and fall in value more rapidly and to a greater extent than shares of a fund that does not concentrate or focus in a particular industry or economic sector. The financial services industry has recently experienced high volatility and a number of issuer failures and the value of many of these securities has significantly declined. As a result, the risk associated with investing in the Fund may be increased as compared to a fund that does not concentrate in the financial services industry. Credit/Counterparty Risk
Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments. Foreign securities may be subject to increased credit risk because of the potential difficulties of requiring foreign entities to honor their contractual commitments.

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Investment Goals, Strategies and Risks The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.Currency RiskThis is the risk that fluctuations in exchange rates between the U.S. dollar and foreign currencies and between various foreign currencies may cause the value of the Fund’s investments to decline. The market for some (or all) currencies may from time to time have low trading volume and become illiquid, which may prevent the Fund from effecting positions or from promptly liquidating unfavorable positions in such markets, thus subjecting the Fund to substantial losses. Derivatives RiskDerivatives are financial contracts whose value depends upon or is derived from the value of an underlying asset, reference rate or index. Examples of derivatives include futures contracts, swaps and forward transactions. The Fund expects to make extensive use of derivative transactions, and anticipates that the majority of its returns will be attributable to its derivative transactions. Therefore, the performance of the Fund will depend to a great extent on the success of the Adviser’s derivative strategies. This use of derivatives for these purposes entails greater risk than using derivatives solely for hedging purposes, and may be considered a speculative activity. The Fund’s use of derivatives, such as futures, forward contracts, foreign currency transactions and commodity-linked derivatives, involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward currency contracts and other OTC traded derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices and the risk of losing more than the initial margin required to initiate derivatives positions. In addition, although the Adviser will attempt to ensure that at all times the Fund has sufficient liquid assets to cover its obligations under its derivative contracts, these obligations will often be volatile and it is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. Equity Securities RiskThe value of your investment in the Fund is based on the market value (or price) of the securities the Fund holds. You may lose money on your investment due to unpredictable drops in the value of a security or periods of below-average performance in a given stock or the stock market as a whole. The value of the Fund’s investments in equity securities is subject to the risks of unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. The market value of a security can change daily due to political, economic and other events that affect the securities markets generally, as well as those that affect particular companies or governments. These price movements, sometimes called volatility, will vary depending on the types of securities the Fund owns and the markets in which they trade. Historically, the equity markets have moved in cycles, and the value of the Fund’s equity securities may fluctuate drastically from day to day. Individual companies may report poor results or be negatively affected by industry and/or economic trends and developments. The prices of securities issued by such companies may suffer a decline in response to such trends and developments. Equity securities may include common stocks, preferred stocks, warrants, securities convertible into common or preferred stocks and other equity-like interests in an entity. Common stocks represent an equity or ownership interest in an issuer. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock. Equity securities may take the form of stock in corporations, real estate investment trusts (“REITs”) or other trusts and other similar securities. Foreign Securities RiskThis is the risk associated with investments in issuers located in foreign countries. The Fund’s investments in foreign securities may experience more rapid and extreme changes in value than investments in securities of U.S. issuers. The securities markets of many foreign countries are relatively small, with a limited number of issuers and a small number of securities. In addition, foreign companies often are not subject to the same degree of regulation as U.S. companies. Reporting, accounting and auditing standards of foreign countries differ, in some cases significantly, from U.S. standards. Nationalization, expropriation or confiscatory taxation, currency blockage, political changes or diplomatic developments can cause the value of the Fund’s non-U.S. investments to decline. In the event of nationalization, expropriation or other confiscation, the Fund could lose its entire foreign investment. Investments in emerging markets may be subject to these risks to a greater extent than those in more developed markets. These risks also apply to securities of foreign issuers traded in the United States or through depositary receipt programs such as American Depositary Receipts.

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Investment Goals, Strategies and Risks Hedge Fund RiskHedge funds are typically unregulated private investment pools available only to sophisticated investors. They are often illiquid and highly leveraged. Although the Fund will not invest directly in hedge funds, because the Fund’s investments are intended to provide exposure to the factors that drive hedge fund returns, an investment in the Fund will be subject to many of the same risks associated with an investment in a diversified portfolio of hedge funds. Therefore, the Fund’s performance may be lower than the returns of the broader stock market and the Fund’s net asset value may fluctuate substantially over time. Index/Tracking Error Risk Although the Fund does not seek to track any particular index, the Fund seeks to analyze the factors that drive hedge fund returns, as determined by reference to one or more indices. These indices may not provide an accurate representation of hedge fund returns generally, and the Adviser’s strategy may not successfully identify or be able to replicate factors that drive returns. There is a risk that hedge fund return data provided by third party hedge fund index providers may be inaccurate or may not accurately reflect hedge fund returns due to survivorship bias, self-reporting bias or other biases. Even if an index does provide an accurate representation of hedge fund returns generally, the Fund’s performance may not match the returns of any such index during any period of time. For example, the Fund’s returns may differ from the returns of an index because of the inability of the Fund’s managers to replicate hedge fund returns (which are based on many different types of assets, including illiquid assets, that may not be available for investment by the Fund) using futures and forward contracts and because of differences in volatility between the Fund’s portfolio and the returns of the index. In addition, unlike an index, the Fund will be subject to a management fee and other Fund-level expenses. Therefore, the returns of the Fund may differ significantly from returns of hedge funds generally, or the returns of any particular index. Interest Rate RiskThis is the risk that changes in interest rates will affect the value of the Fund’s investments in fixed-income securities, such as bonds, notes, asset-backed securities and other income-producing securities and derivatives. Fixed-income securities are obligations of the issuer to make payments of principal and/or interest on future dates. Increases in interest rates may cause the value of the Fund’s investments to decline. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment. Generally, the value of fixed-income securities, including short-term fixed-income securities, rises when prevailing interest rates fall and falls when interest rates rise. A significant change in interest rates could cause the Fund’s share price (and the value of your investment) to change. Issuer RiskThe value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services. Leverage RiskThis is the risk associated with securities or practices (e.g., borrowing and the use of certain derivatives) and investment in certain types of derivatives that multiply small index or market movements into larger changes in value. Use of derivative instruments may involve leverage. Leverage magnifies the potential for gain and the risk of loss. As a result, a relatively small decline in the value of the underlying investments could result in a relatively large loss. Although the Adviser will seek to manage the Fund’s risk from the leverage associated with derivative investments by closely monitoring the volatility of such investments, the Adviser may not be successful in this respect. Liquidity RiskLiquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Derivatives and securities that involve substantial interest rate or credit risk tend to involve greater liquidity risk. In addition, liquidity risk tends to increase to the extent the Fund invests in securities whose sale may be restricted by law or by contract, such as Rule 144A securities. Investment in derivatives may be especially illiquid when compared to other securities, especially during periods of market stress. Similarly, the market for money market and similar instruments may become illiquid at certain times. At these times, it may be difficult to sell securities. Illiquid investments also may be difficult to value. Management RiskManagement risk is the risk that the Adviser’s or Subadviser’s investment techniques could fail to achieve the Fund’s objective and could cause your investment in the Fund to lose value. The Fund is subject to management risk because the Fund is actively managed. The Adviser and Subadviser will apply their investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that such decisions will produce the desired results. For example, securities that the Adviser or Subadviser expect to appreciate in value may, in fact, decline. Similarly, in some cases, derivative and other investment techniques may be unavailable or the Adviser or Subadviser may determine not to use them, even under market conditions where their use could have benefited the Fund. The Adviser utilizes various proprietary quantitative models to identify investment opportunities. There is a possibility that one or all of the quantitative models may fail to identify profitable opportunities at any time. Furthermore, they may incorrectly identify opportunities and these misidentified opportunities may lead to substantial losses. The Adviser’s judgments about the weightings among various models and strategies may be incorrect, adversely affecting performance.

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Investment Goals, Strategies and Risks Market RiskThis is the risk that the value of the Fund’s investments will change as financial markets fluctuate and that prices overall may decline. The value of a company’s securities may fall as a result of factors that directly relate to that company, such as decisions made by its management or lower demand for the company’s products or services. A security’s value also may fall because of factors affecting not just the company, but companies in its industry or in a number of different industries, such as increases in production costs. In addition, the value of the Fund’s derivative investments may fall even when the value of the securities markets is rising. The value of a company’s securities also may be affected by changes in financial market conditions, such as changes in interest rates or currency exchange rates. U.S. Government Securities RiskInvestments in certain U.S. government securities may not be supported by the full faith and credit of the U.S. government. Accordingly, no assurance can be given that the U.S. government will provide financial support to U.S. government agencies, instrumentalities or sponsored enterprises if it is not obligated to do so by law. The maximum potential liability of the issuers of some U.S. government securities held by the Fund may greatly exceed their current resources, and it is possible that these issuers will not have the funds to meet their payment obligations in the future. In such a case, the Fund would have to look principally to the agency, instrumentality or sponsored enterprise issuing or guaranteeing the security for ultimate repayment, and the Fund may not be able to assert a claim against the U.S. government itself in the event the agency, instrumentality or sponsored enterprise does not meet its commitment. Concerns about the capacity of the U.S. government to meet its obligations may raise the interest rates payable on its securities, negatively impacting the price of such securities already held by the Fund.Valuation RiskThis is the risk that the Fund has valued certain securities at a price different from the price at which they can be sold. This risk may be especially pronounced for investments, such as derivatives, which may be illiquid or which may become illiquid.

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Investment Goals, Strategies and Risks ASG Managed Futures Strategy Fund Investment Goal The Fund pursues an absolute return strategy that seeks to provide capital appreciation. The investment goal is non-fundamental and may be changed without shareholder approval. The Fund will provide 60 days’ prior notice to shareholders before changing the investment goals.Principal Investment Strategies The Fund seeks to generate positive absolute returns over time. Under normal market conditions, AlphaSimplex typically will make extensive use of a variety of derivative instruments, including futures and forward contracts, to capture the exposures suggested by its absolute return strategy while also seeking to add value through volatility management. These market exposures, which are expected to change over time, may include, for example, exposures to the returns of U.S. and non-U.S. equity and fixed income securities indices (including both broad- and narrow-based securities indices), currencies and commodities. AlphaSimplex uses a proprietary quantitative model to identify price trends within multiple asset classes across time periods of various lengths. AlphaSimplex believes that asset prices may show persistent trending behavior due to a number of behavioral biases among market participants as well as certain risk-management policies that will identify assets to purchase in upward-trending markets and identify assets to sell in downward-trending markets. AlphaSimplex believes that following trends across a widely diversified set of assets, combined with sophisticated risk management, may allow it to earn a positive expected return over time. The Fund may have both “short” and “long” exposures within an asset class based upon AlphaSimplex’s analysis of multiple time horizons to identify trends in a particular asset class. A “short” exposure will benefit when the underlying asset class decreases in price. A “long” exposure will benefit when the underlying asset class increases in price. AlphaSimplex will scale the notional exposure of the Fund’s futures and currency forward positions with the objective of targeting a relatively stable level of annualized volatility for the Fund’s overall portfolio. AlphaSimplex will have great flexibility to allocate the Fund’s derivatives exposure among various securities, indices, currencies, commodities and other instruments, and the amount of the Fund’s assets that may be allocated to derivative strategies and among these various instruments is expected to vary over time.Under normal market conditions, it is expected that no more than 25% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to the Fund’s derivative transactions. The notional value of the Fund’s derivative investments, however, will generally exceed 25% of the Fund’s total assets. The Fund expects that under normal market conditions it will invest at least 75% of its total assets in money market and other short-term, high quality securities (such as bankers’ acceptances, certificates of deposit, commercial paper, loan participations, repurchase agreements and time deposits) managed by Reich & Tang, although the Fund may invest less than this percentage. The assets allocated to the Money Market Portion will be used primarily to support the Fund’s investments in derivatives and, secondarily, to provide the Fund with incremental income and liquidity. Although the Fund will invest a significant portion of its assets in money market instruments, the Fund is not a “money market” fund and the value of the Money Market Portion as well as the value of the Fund’s shares may decrease. The Fund will concentrate its investments in the financial services industry, which means it will normally invest at least 25% of its total assets in securities and other obligations (for example, bank certificates of deposit, repurchase agreements and time deposits) of issuers in such industry.Reich & Tang will only invest the assets of the Money Market Portion in high quality securities which are denominated in U.S. dollars, and will select securities for investment based on various factors, including the security’s maturity and rating. Reich & Tang will invest primarily in (i) short-term obligations issued or guaranteed by the United States government, its agencies or instrumentalities (“U.S. Government Obligations”); (ii) securities issued by foreign governments, their political subdivisions, agencies or instrumentalities; (iii) certificates of deposit, time deposits and bankers’ acceptances issued by domestic banks, foreign branches of domestic banks, foreign subsidiaries of domestic banks and domestic and foreign branches of foreign banks; (iv) variable amount master demand notes; (v) participation interests in loans extended by banks to companies; (vi) commercial paper or similar debt obligations; and (vii) repurchase agreements.Although the Fund does not intend to invest in physical commodities directly, the Fund expects to obtain investment exposure to commodities and commodity-related derivatives through its investments in the Commodity Subsidiary, which will make commodity-related investments. Under normal market conditions, no more than 10% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to these transactions.Although the Fund seeks positive absolute returns over time, it is likely that the Fund’s investment returns may be volatile over short periods of time. The Fund may outperform the overall securities market during periods of flat or negative market performance and may underperform during periods of strong market performance. There can be no assurance that the Fund’s returns over time or during any period will be positive or that the Fund will outperform the overall security markets over time or during any particular period.The Fund may engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance. Due to the short-term nature of the Fund’s investment portfolio, the Fund does not calculate a portfolio turnover rate. The Fund’s trading in derivatives is active and frequent. Active and frequent trading of derivatives, like active and frequent trading of securities, will result in transaction costs which reduce fund returns.

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Investment Goals, Strategies and Risks The percentage limitations set forth herein are not investment restrictions and the Fund may exceed these limits from time to time. As a temporary defensive measure, the Fund may hold any portion of its assets in cash (U.S. dollars, foreign currencies or multinational currency units) and/or invest in money market instruments or high quality debt securities and take other defensive positions as AlphaSimplex deems appropriate. The Fund may miss certain investment opportunities if it uses defensive strategies and thus may not achieve its investment goals. Principal Investment RisksThe Fund has principal investment strategies that come with inherent risks. The principal risks of investing in the Fund are summarized in the Fund Summary under “Principal Investment Risks.” The Fund does not represent a complete investment program. The following is a list of risks to which the Fund may be subject because of its investments in various types of securities or engagement in various practices. Because of the Fund’s extensive use of derivative instruments, the Fund will be subject to many of the risks below indirectly through its derivative transactions rather than directly through investment in the actual securities themselves. For example, to the extent the Fund enters into a futures contract on an equity index, the Fund will be subject to “equity securities” risk. Commodity RiskThis is the risk that exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of physical commodities or commodity-linked derivative instruments may be affected by changes in overall market movements, commodity price volatility, changes in interest rates, currency fluctuations or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund. Commodity Subsidiary RiskInvesting in a wholly-owned commodity subsidiary organized under the laws of a non-U.S. jurisdiction, such as the Commodity Subsidiary, will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments. The Commodity Subsidiary is not registered under the 1940 Act, and unless otherwise noted, is not subject to all of the investor protections of the 1940 Act. However, the Commodity Subsidiary is wholly-owned and controlled by the Fund and therefore, is unlikely to take action contrary to the interests of the Fund or its shareholders. In monitoring compliance with its investment restrictions, the Fund will consider the assets of the Commodity Subsidiary to be assets of the Fund. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its shareholders. For example, the Cayman Islands do not currently impose any income, corporate or capital gains tax, estate duty, inheritance tax, gift tax or withholding tax on the Commodity Subsidiary. If Cayman Islands law changes such that the Commodity Subsidiary is required to pay Cayman Islands taxes, the Fund’s shareholders may suffer decreased investment returns.Concentrated Investment RiskThe Fund is particularly vulnerable to events affecting companies in the financial services industry because the Fund concentrates its investments in securities and other obligations of issuers in such industry. Examples of risks affecting the financial services industry include changes in governmental regulation, issues relating to the availability and cost of capital, changes in interest rates and/or monetary policy and price competition. In addition, financial services companies are often more highly leveraged than other companies, making them inherently riskier. As a result, the Fund’s shares may rise and fall in value more rapidly and to a greater extent than shares of a fund that does not concentrate or focus in a particular industry or economic sector. The financial services industry has recently experienced high volatility and a number of issuer failures and the value of many of these securities has significantly declined. As a result, the risk associated with investing in the Fund may be increased as compared to a fund that does not concentrate in the financial services industry.Credit/Counterparty Risk
Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments. Foreign securities may be subject to increased credit risk because of the potential difficulties of requiring foreign entities to honor their contractual commitments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.

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Investment Goals, Strategies and Risks Currency RiskThis is the risk that fluctuations in exchange rates between the U.S. dollar and foreign currencies and between various foreign currencies may cause the value of the Fund’s investments to decline. The market for some (or all) currencies may from time to time have low trading volume and become illiquid, which may prevent the Fund from effecting positions or from promptly liquidating unfavorable positions in such markets, thus subjecting the Fund to substantial losses. Derivatives RiskDerivatives are financial contracts whose value depends upon or is derived from the value of an underlying asset, reference rate or index. Examples of derivatives include futures contracts, swaps and forward transactions. The Fund expects to make extensive use of derivative transactions, and anticipates that the majority of its returns will be attributable to its derivative transactions. Therefore, the performance of the Fund will depend to a great extent on the success of the Adviser’s derivative strategies. This use of derivatives for these purposes entails greater risk than using derivatives solely for hedging purposes, and may be considered a speculative activity. The Fund’s use of derivatives, such as futures, forward contracts, foreign currency transactions and commodity-linked derivatives, involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward currency contracts and other OTC traded derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices and the risk of losing more than the initial margin required to initiate derivatives positions. In addition, although the Adviser will attempt to ensure that at all times the Fund has sufficient liquid assets to cover its obligations under its derivative contracts, these obligations will often be volatile and it is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. Equity Securities RiskThe value of your investment in the Fund is based on the market value (or price) of the securities the Fund holds. You may lose money on your investment due to unpredictable drops in the value of a security or periods of below-average performance in a given stock or the stock market as a whole. The value of the Fund’s investments in equity securities is subject to the risks of unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. The market value of a security can change daily due to political, economic and other events that affect the securities markets generally, as well as those that affect particular companies or governments. These price movements, sometimes called volatility, will vary depending on the types of securities the Fund owns and the markets in which they trade. Historically, the equity markets have moved in cycles, and the value of the Fund’s equity securities may fluctuate drastically from day to day. Individual companies may report poor results or be negatively affected by industry and/or economic trends and developments. The prices of securities issued by such companies may suffer a decline in response to such trends and developments. Equity securities may include common stocks, preferred stocks, warrants, securities convertible into common or preferred stocks and other equity-like interests in an entity. Common stocks represent an equity or ownership interest in an issuer. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock. Equity securities may take the form of stock in corporations, real estate investment trusts (“REITs”) or other trusts and other similar securities. Foreign Securities RiskThis is the risk associated with investments in issuers located in foreign countries. The Fund’s investments in foreign securities may experience more rapid and extreme changes in value than investments in securities of U.S. issuers. The securities markets of many foreign countries are relatively small, with a limited number of issuers and a small number of securities. In addition, foreign companies often are not subject to the same degree of regulation as U.S. companies. Reporting, accounting and auditing standards of foreign countries differ, in some cases significantly, from U.S. standards. Nationalization, expropriation or confiscatory taxation, currency blockage, political changes or diplomatic developments can cause the value of the Fund’s non-U.S. investments to decline. In the event of nationalization, expropriation or other confiscation, the Fund could lose its entire foreign investment. Investments in emerging markets may be subject to these risks to a greater extent than those in more developed markets. These risks also apply to securities of foreign issuers traded in the United States or through depositary receipt programs such as American Depositary Receipts. Interest Rate RiskThis is the risk that changes in interest rates will affect the value of the Fund’s investments in fixed-income securities, such as bonds, notes, asset-backed securities and other income-producing securities and derivatives. Fixed-income securities are obligations of the issuer to make payments of principal and/or interest on future dates. Increases in interest rates may cause the value of the Fund’s investments to decline. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment. Generally, the value of fixed-income securities, including short-term fixed-income securities, rises when prevailing interest rates fall and falls when interest rates rise. A significant change in interest rates could cause the Fund’s share price (and the value of your investment) to change.

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Investment Goals, Strategies and Risks Issuer RiskThe value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services. Leverage RiskThis is the risk associated with securities or practices (e.g., borrowing and the use of certain derivatives) and investment in certain types of derivatives that multiply small index or market movements into larger changes in value. Use of derivative instruments may involve leverage. Leverage magnifies the potential for gain and the risk of loss. As a result, a relatively small decline in the value of the underlying investments could result in a relatively large loss. Although the Adviser will seek to manage the Fund’s risk from the leverage associated with derivative investments by closely monitoring the volatility of such investments, the Adviser may not be successful in this respect. Liquidity RiskLiquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Derivatives and securities that involve substantial interest rate or credit risk tend to involve greater liquidity risk. In addition, liquidity risk tends to increase to the extent the Fund invests in securities whose sale may be restricted by law or by contract, such as Rule 144A securities. Investment in derivatives may be especially illiquid when compared to other securities, especially during periods of market stress. Similarly, the market for money market and similar instruments may become illiquid at certain times. At these times, it may be difficult to sell securities. Illiquid investments also may be difficult to value. Management RiskManagement risk is the risk that the Adviser’s or Subadviser’s investment techniques could fail to achieve the Fund’s objective and could cause your investment in the Fund to lose value. The Fund is subject to management risk because the Fund is actively managed. The Adviser and Subadviser will apply their investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that such decisions will produce the desired results. For example, securities that the Adviser or Subadviser expect to appreciate in value may, in fact, decline. Similarly, in some cases, derivative and other investment techniques may be unavailable or the Adviser or Subadviser may determine not to use them, even under market conditions where their use could have benefited the Fund. The Adviser utilizes various proprietary quantitative models to identify investment opportunities. There is a possibility that one or all of the quantitative models may fail to identify profitable opportunities at any time. Furthermore, they may incorrectly identify opportunities and these misidentified opportunities may lead to substantial losses. The Adviser’s judgments about the weightings among various models and strategies may be incorrect, adversely affecting performance.Market RiskThis is the risk that the value of the Fund’s investments will change as financial markets fluctuate and that prices overall may decline. The value of a company’s securities may fall as a result of factors that directly relate to that company, such as decisions made by its management or lower demand for the company’s products or services. A security’s value also may fall because of factors affecting not just the company, but companies in its industry or in a number of different industries, such as increases in production costs. In addition, the value of the Fund’s derivative investments may fall even when the value of the securities markets is rising. The value of a company’s securities also may be affected by changes in financial market conditions, such as changes in interest rates or currency exchange rates. Mortgage-Related and Asset-Backed Securities Risk Mortgage-related securities, such as Government National Mortgage Association certificates or securities issued by the Federal National Mortgage Association, differ from traditional fixed-income securities. Among the major differences are that interest and principal payments are made more frequently, usually monthly, and that principal may be prepaid at any time because the underlying mortgage loans generally may be prepaid at any time. As a result, if the Fund purchases these assets at a premium, a faster-than-expected prepayment rate will reduce yield to maturity, and a slower-than-expected prepayment rate will increase yield to maturity. If the Fund purchases mortgage-related securities at a discount, faster-than-expected prepayments will increase, and slower-than-expected prepayments will reduce, yield to maturity. Prepayments, and resulting amounts available for reinvestment by the Fund, are likely to be greater during a period of declining interest rates and, as a result, are likely to be reinvested at lower interest rates. Accelerated prepayments on securities purchased at a premium may result in a loss of principal if the premium has not been fully amortized at the time of prepayment. These securities will generally decrease in value as a result of increases in interest rates, and they are likely to appreciate less than other fixed-income securities when interest rates decline because of the risk of prepayments.The market for mortgage-backed securities (and other asset-backed securities) has experienced high volatility and a lack of liquidity. As a result, the value of many of these securities has significantly declined. There can be no assurance that these markets will become more liquid or less volatile, and it is possible that the value of these securities could decline further. The Fund’s investments in other asset-backed securities are subject to risks similar to those associated with mortgage-related securities, as well as additional risks associated with the nature of the assets and the servicing of those assets.

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Investment Goals, Strategies and Risks U.S. Government Securities RiskInvestments in certain U.S. government securities may not be supported by the full faith and credit of the U.S. government. Accordingly, no assurance can be given that the U.S. government will provide financial support to U.S. government agencies, instrumentalities or sponsored enterprises if it is not obligated to do so by law. The maximum potential liability of the issuers of some U.S. government securities held by the Fund may greatly exceed their current resources, and it is possible that these issuers will not have the funds to meet their payment obligations in the future. In such a case, the Fund would have to look principally to the agency, instrumentality or sponsored enterprise issuing or guaranteeing the security for ultimate repayment, and the Fund may not be able to assert a claim against the U.S. government itself in the event the agency, instrumentality or sponsored enterprise does not meet its commitment. Concerns about the capacity of the U.S. government to meet its obligations may raise the interest rates payable on its securities, negatively impacting the price of such securities already held by the Fund.Valuation RiskThis is the risk that the Fund has valued certain securities at a price different from the price at which they can be sold. This risk may be especially pronounced for investments, such as derivatives, which may be illiquid or which may become illiquid.

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Investment Goal, Strategies and Risks Gateway FundInvestment GoalThe Fund seeks to capture the majority of the returns associated with equity market investments, while exposing investors to less risk than other equity investments. The Fund’s investment objective is non-fundamental, which means that it may be changed without shareholder approval. The Fund will provide 60 days’ prior written notice to shareholders before changing the investment goal.Principal Investment Strategies Under normal circumstances, the Fund invests in a broadly diversified portfolio of common stocks, while also selling index call options and purchasing index put options. Writing index call options reduces the Fund’s volatility, provides steady cash flow and is an important source of the Fund’s return, although it also reduces the Fund’s ability to profit from increases in the value of its equity portfolio. The Fund also buys index put options, which can protect the Fund from a significant market decline that may occur over a short period of time. The value of an index put option generally increases as the prices of the stocks constituting the index decrease, and decreases as those stocks increase in price. The combination of the diversified stock portfolio, the steady cash flow from the sale of index call options and the downside protection from index put options is intended to provide the Fund with the majority of the returns associated with equity market investments while exposing investors to less risk than other equity investments. The Fund may invest in companies with small, medium or large market capitalizations. Equity securities purchased by the Fund may include U.S. exchange-listed common stocks, ADRs, which are securities issued by a U.S. bank that represent interests in foreign equity securities, and interests in REITs.The Fund not only strives for the majority of the returns associated with equity market investments, but also returns in excess of those available from other investments comparable in volatility. Because, as described above, the Fund writes index call options and purchases index put options in addition to investing in equity securities, the Fund’s historical volatility has been closer to intermediate-to long-term fixed income investments (intermediate-term are those with approximately five-year maturities and long-term are those with maturities of ten or more years) and hybrid investments (blends of equity and short-term fixed income securities) than to equity investments. With its core investment in equities, the Fund is significantly less vulnerable to fluctuations in value caused by interest rate volatility, a risk factor present in both fixed income and “hybrid investments” (blends of equity and short-term fixed income), although the Fund expects to generally have lower long-term returns than a fund consisting solely of equity securities. The Fund intends that its index option-based risk management strategy will reduce the volatility inherent in equities while sacrificing less of the higher equity returns than hybrid investments. Thus, the Fund seeks to provide an efficient trade-off between risk and reward where risk is characterized by volatility or fluctuations in value over time.The Fund’s investment strategies are described in more detail below.Purchasing StocksThe Fund invests in a diversified stock portfolio, generally consisting of approximately 200 to 400 stocks, designed to support the Fund’s index option-based risk management strategy as efficiently as possible while seeking to enhance the Fund’s total return. The Adviser uses a multi-factor quantitative model to construct the stock portfolio. The model evaluates approximately 9,000 equity securities to construct a portfolio of U.S.-exchange-traded equities that meets criteria and constraints established by the Adviser. Generally, the Adviser tries to minimize the difference between the performance of the stock portfolio and that of the index or indexes underlying the Fund’s option strategies while also considering other factors, such as predicted dividend yield. The Adviser monitors this difference and the other factors, and rebalances and adjusts the stock portfolio from time to time, by purchasing and selling stocks. The Adviser expects the portfolio to generally represent the broad U.S. equity market.Writing Index Call OptionsThe Fund continuously writes index call options, typically on broad-based securities market indices, on the full value of its broadly diversified stock portfolio. As the seller of the index call option, the Fund receives cash (the “premium”) from the purchaser. The purchaser of an index call option has the right to any appreciation in the value of the index over a fixed price (the “exercise price”) on a certain date in the future (the “expiration date”). If the purchaser does not exercise the option, the Fund retains the premium. If the purchaser exercises the option, the Fund pays the purchaser the difference between the value of the index and the exercise price of the option. The premium, the exercise price and the value of the index determine the gain or loss realized by the Fund as the seller of the index call option. The Fund can also repurchase the call option prior to the expiration date, ending its obligation. In this case, the difference between the cost of repurchasing the option and the premium received will determine the gain or loss realized by the Fund.Purchasing Index Put OptionsThe Fund may buy index put options in an attempt to protect the Fund from a significant market decline that may occur over a short period of time. The value of an index put option generally increases as stock prices (and the value of the index) decrease and decreases as those stocks (and the index) increase in price. The Fund may not spend at any time more than 5% of its assets to purchase index put options.

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Investment Goal, Strategies and Risks Other InvestmentsThe Fund may invest in foreign securities traded in U.S. markets (through ADRs or stocks traded in U.S. dollars). The Fund may also invest in other investment companies, including money market funds, to the extent permitted by the the 1940 Act. The Fund may enter into repurchase agreements and/or hold cash and cash equivalents.Temporary Defensive MeasureAs a temporary defensive measure, the Fund may purchase U.S. government securities, certificates of deposit, commercial paper, bankers’ acceptance, and/or repurchase agreements or hold cash (U.S. dollars, foreign currencies or multinational currency units) for temporary defensive purposes in response to adverse market, economic or political conditions, or, under normal circumstances, for purposes of liquidity. These investments may prevent the Fund from achieving its investment objective. Principal Investment RisksThe Fund has principal investment strategies that come with inherent risks. The principal risks of investing in the Fund are summarized in the Fund Summary under “Principal Investment Risks.” The Fund does not represent a complete investment program. The following is a list of the risks to which the Fund may be subject because of its investments in various types of securities or engagement in various practices. Because of the Fund’s use of derivative instruments, the Fund may be subject to many of the risks below indirectly through its derivative transactions. For example, to the extent the Fund enters into an interest rate swap contract, the Fund will be subject to “interest rate” risk. Correlation RiskThe effectiveness of the Fund’s index option-based risk management strategy may be reduced if the performance of the Fund’s equity portfolio does not correlate to that of the index underlying its option positions.Equity Securities RiskThe value of your investment in the Fund is based on the market value (or price) of the securities the Fund holds. You may lose money on your investment due to unpredictable drops in the value of a security or periods of below-average performance in a given stock or the stock market as a whole. The value of the Fund’s investments in equity securities is subject to the risks of unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. The market value of a security can change daily due to political, economic and other events that affect the securities markets generally, as well as those that affect particular companies or governments. These price movements, sometimes called volatility, will vary depending on the types of securities the Fund owns and the markets in which they trade. Historically, the equity markets have moved in cycles, and the value of the Fund’s equity securities may fluctuate drastically from day to day. Individual companies may report poor results or be negatively affected by industry and/or economic trends and developments. The prices of securities issued by such companies may suffer a decline in response to such trends and developments. Equity securities may include common stocks, preferred stocks, warrants, securities convertible into common or preferred stocks and other equity-like interests in an entity. Common stocks represent an equity or ownership interest in an issuer. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock. Equity securities may take the form of stock in corporations, real estate investment trusts (“REITs”) or other trusts and other similar securities. Foreign Securities RiskThe Fund may invest in foreign securities traded in U.S. markets, including through ADRs. Foreign securities are subject to foreign currency fluctuations, higher volatility than U.S. securities and limited liquidity. Political, economic and information risks are also associated with foreign securities. Investments in emerging markets may be subject to these risks to a greater extent than those in more developed markets. The Fund’s investments in foreign securities may be subject to foreign withholding and other taxes. In that case, the Fund’s yield on those securities would be decreased. Settlement practices for transactions in foreign markets may differ from those in U.S. markets. Such differences include delays beyond periods customary in the U.S. and practices, such as delivery of securities prior to receipt of payment, which increase the likelihood of a “failed settlement.” Failed settlements can result in losses to the Fund. Investments in emerging markets may be subject to these risks to a greater extent than those in more developed markets. These risks also apply to securities of foreign issuers traded in the United States or through depository receipt programs such as American Depository Receipts.Investments in Other Investment Companies RiskThe Fund will indirectly bear the management service and other fees of the other investment company in addition to its own expenses. Management RiskThis is the risk that a strategy used by the Fund’s portfolio managers may fail to produce the intended result. Market RiskThis is the risk that the market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions.

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Investment Goal, Strategies and Risks Options RiskThe value of the Fund’s positions in index options may fluctuate in response to changes in the value of the underlying index. Writing index call options can reduce the risk of owning stocks, but it limits the opportunity to profit from an increase in the market value of stocks in exchange for up-front cash at the time of selling the call option. The Fund also risks losing all or part of the cash paid for purchasing index put options. Unusual market conditions or the lack of a ready market for any particular option at a specific time may reduce the effectiveness of the Fund’s option strategies, and for these and other reasons the Fund’s option strategies may not reduce the Fund’s volatility to the extent desired. From time to time, the Fund may reduce its holdings of put options, resulting in an increased exposure to a market decline. REITs RiskThe real estate industry is particularly sensitive to economic downturns. Securities of companies in the real estate industry, including REITs, are sensitive to factors such as changes in real estate values, property taxes and tax laws, interest rates, cash flow of underlying real estate assets, occupancy rates, government regulations affecting zoning, land use and rents, and the management skill and creditworthiness of the issuer. Companies in the real estate industry also may be subject to liabilities under environmental and hazardous waste laws. In addition, the value of a REIT is affected by changes in the value of the properties owned by the REIT or the mortgage loans held by the REIT. REITS are also subject to default and prepayment risk. REITs are dependent upon cash flow from their investments to repay financing costs and also on the ability of the REITs’ managers. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests in addition to the expenses of the Fund. Additional Information Regarding the Gateway Predecessor FundThe Fund acquired the assets and liabilities of the Gateway Predecessor Fund in a reorganization (the “Reorganization”) on February 15, 2008 (February 19, 2008 for Class C Shares). The returns shown for periods prior to February 15, 2008 in the Risk/Return Bar Chart and Table in the Fund summary reflect the performance of the Gateway Predecessor Fund. Shareholders of the Gateway Predecessor Fund received Class A shares of the Fund in the Reorganization. The Fund’s Class A and Class C shares were not outstanding prior to the Reorganization. Although the Gateway Predecessor Fund’s shares and the Fund’s Class A and Class C shares would have had substantially similar annual returns because the shares would have been invested in the same portfolio of securities, returns for Class A and Class C shares would have been different to the extent their respective expenses differ. Performance for periods after the Reorganization reflects actual Class A and Class C performance.

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Investment Goals, Strategies and Risks Loomis Sayles Absolute Strategies Fund Investment Goal The Fund seeks to provide an attractive absolute total return, complemented by prudent investment management designed to manage risks and protect investor capital. The secondary goal of the Fund is to achieve these returns with relatively low volatility. The investment goal is non-fundamental and may be changed without shareholder approval. The Fund will provide 60 days’ prior notice to shareholders before changing the investment goal.Principal Investment Strategies The Fund has an absolute return investment objective, which means that it is not managed relative to an index and that it attempts to achieve positive total returns over a full market cycle. The Fund intends to pursue its objective by utilizing a flexible investment approach that allocates investments across a global range of investment opportunities related to credit, currencies and interest rates, while employing risk management strategies to mitigate downside risk. The Fund may invest up to 100% of its total assets in below investment-grade fixed-income securities (also known as “junk bonds”) and derivatives that have returns related to the returns on below investment-grade fixed-income securities, although it is expected that, under normal market conditions, the Fund’s net exposure (i.e., long exposures obtained through direct investments in securities and in derivatives minus short exposures obtained through derivatives) to below investment-grade fixed-income assets generally will not exceed 50% of the Fund’s total assets. Under normal market conditions, the Fund also may invest up to 50% of its total assets in investments denominated in non-U.S. currencies and related derivatives, including up to 20% in investments denominated in emerging market currencies and related derivatives. The Fund expects that its exposure to these asset classes will often be obtained substantially through the use of derivative instruments. The Fund defines an “emerging market currency” as a currency of a country that carries a sovereign quality rating that is rated below investment-grade by either S&P or Moody’s, or is unrated by both S&P and Moody’s. Currency positions that are intended to hedge the Fund’s non-U.S. currency exposure (i.e., currency positions that are not made for investment purposes) will offset positions in the same currency that are made for investment purposes when calculating the limitation on investments in non-U.S. and emerging market currency investments because the Fund believes that hedging a currency position is likely to negate some or all of the currency risk associated with the original currency position. The Fund does not have limits on the duration of its portfolio, and the Fund’s duration will change over time.In selecting investments for the Fund, the Adviser develops long-term portfolio themes driven by macro-economic indicators. These include secular global economic trends, demographic trends and labor supply, analysis of global capital flows and assessments of geopolitical factors. The Adviser then develops shorter-term portfolio strategies based on factors including, but not limited to, economic, credit and Federal Reserve cycles, and top-down sector valuations and bottom-up security valuations. The Adviser employs active risk management, with a focus on credit, interest rate and currency risks. Additionally, the portfolio managers will use risk management tools in constructing and optimizing the portfolio and seek to manage risk on an ongoing basis. The portfolio management team expects to actively evaluate each investment idea based upon its return potential, its level of risk and its fit within the team’s overall macro strategy when deciding whether to buy or sell investments, with the goal of continually optimizing the Fund’s portfolio.The Fund will pursue its investment goal by obtaining long investment exposures through direct cash investments and derivatives and short investment exposures substantially through derivatives. A “long” investment exposure is an investment that rises in value with a rise in the value of an asset, asset class or index and declines in value with a decline in the value of that asset, asset class or index. A “short” investment exposure is an investment that rises in value with a decline in the value of an asset, asset class or index and declines in value with a rise in the value of that asset, asset class or index. The Fund’s long and short investment exposures may, at times, each reach 100% of the assets invested in the Fund (excluding instruments primarily used for duration management and short-term investments (such as cash and money market instruments)), although these exposures may be higher or lower at any given time.Fixed-Income Investments. In connection with its principal investment strategies, the Fund may invest in a broad range of U.S. and non-U.S. fixed-income securities, including, but not limited to, corporate bonds, municipal securities, U.S. and non-U.S. government securities (including their agencies, instrumentalities and sponsored entities), securities of supranational entities, emerging market securities, commercial and residential mortgage-backed securities, collateralized mortgage obligations, other mortgage-related securities (such as adjustable rate mortgage securities), asset-backed securities, bank loans, convertible bonds, Rule 144A securities, REITs, zero-coupon securities, step coupon securities, pay-in-kind securities, inflation-linked bonds, variable and floating rate securities, private placements and commercial paper.Non-U.S. Currency Investments. Under normal market conditions, the Fund may engage in a broad range of transactions involving non-U.S. and emerging market currencies, including, but not limited to, purchasing and selling forward currency exchange contracts in non-U.S. or emerging market currencies, investing in non-U.S. currency futures contracts, investing in options on non-U.S. currencies and non-U.S. currency futures, investing in cross-currency instruments (such as swaps), investing directly in non-U.S. currencies and investing in securities denominated in non-U.S. currencies. The Fund may engage in non-U.S. currency transactions for investment or for hedging purposes.Derivative Investments. For investment and hedging purposes, the Fund may invest substantially in a broad range of derivatives instruments and sometimes the majority of its investment returns will derive from its derivative investments. These derivative instruments include, but are not limited to, futures contracts (such as treasury futures and index futures), forward contracts, options (such as options on futures contracts, options on securities,

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Investment Goals, Strategies and Risks interest rate/bond options, currency options, options on swaps and OTC options), warrants (such as non-U.S. currency warrants) and swap transactions (such as interest rate swaps, total return swaps and index swaps). In addition, the Fund may invest in credit derivative products that may be used to manage default risk and credit exposure. Examples of such products include, but are not limited to, credit default swap index products (such as LCDX, CMBX and ABX index products), single name credit default swaps, loan credit default swaps and asset-backed credit default swaps. The Fund may, at times, invest substantially all of its assets in derivatives and securities used to support its obligations under those derivatives. Derivative instruments (such as those listed above) can be used to acquire or to transfer the risk and returns of a security without buying or selling the security. The Fund’s strategy may be highly dependent on the use of derivatives, and to the extent that they become unavailable or unattractive the Fund may be unable to fully implement its investment strategy.The Fund’s use of derivatives may cause it to be leveraged. Leverage leads to investment exposure in excess of the amount actually invested in the Fund and increases risk.The Fund is non-diversified, which means that it is not limited to a percentage of assets that it may invest in any one issuer. Because the Fund may invest in the securities of a limited number of issuers, an investment in the Fund may involve a higher degree of risk than would be present in a diversified portfolio. The Fund expects to engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance.The percentage limitations set forth herein are not investment restrictions and the Fund may exceed these limits from time to time. In addition, when calculating these exposures, the Fund may use the notional value or an adjusted notional value of a derivative in order to reflect what the Adviser believes to be the most accurate assessment of the Fund’s real economic exposure.
Although the Fund seeks positive total returns over time, the Fund’s investment returns may be volatile over short periods of time. The Fund may out-perform the overall securities market during periods of flat or negative performance and may underperform during periods of strong market performance. There can be no assurance that the Fund’s returns over time or during any period will be positive.As a temporary defensive measure, the Fund may hold any portion of its assets in cash (U.S. dollars, foreign currencies or multinational currency units) and/or invest in money market instruments or high quality debt securities and take other defensive positions as the Adviser deems appropriate. The Fund may miss certain investment opportunities if it uses defensive strategies and thus may not achieve its investment goal.
Principal Investment RisksThe Fund has principal investment strategies that come with inherent risks. The principal risks of investing in the Fund are summarized in the Fund Summary under “Principal Investment Risks.” The Fund does not represent a complete investment program. The following is a list of the risks to which the Fund may be subject because of its investments in various types of securities or engagement in various practices. Because of the Fund’s use of derivative instruments, the Fund may be subject to many of the risks below indirectly through its derivative transactions. For example, to the extent the Fund enters into an interest rate swap contract, the Fund will be subject to “interest rate” risk. Agency Securities Risk
Agency securities are subject to fixed-income securities risk, as described herein. Certain debt securities issued or guaranteed by agencies of the U.S. government are guaranteed as to the payment of principal and interest by the relevant entity but have not been backed by the full faith and credit of the U.S. government. Instead, they have been supported only by the discretionary authority of the U.S. government to purchase the agency’s obligations. An event affecting the guaranteeing entity could adversely affect the payment of principal or interest or both on the security and, therefore, these types of securities should be considered to be riskier than U.S. government securities. In addition, in 2008 the U.S. Treasury Department placed certain government-sponsored companies into conservatorship. The companies remain in conservatorship, and the effect that this conservatorship will have on the companies’ debt and equity securities is unclear.Below Investment-Grade Fixed-Income Securities Risk
Below investment-grade fixed-income securities, also known as “junk bonds,” are rated below investment-grade quality and may be considered speculative with respect to the issuer’s continuing ability to make principal and interest payments. To be considered rated below investment-grade quality, none of the three major rating agencies (Moody’s, Fitch or S&P) must have rated the security in one of their respective top four rating categories at the time the Fund acquires the security or, if the security is unrated, the Adviser has determined it to be of comparable quality. Analysis of the creditworthiness of issuers of below investment-grade fixed-income securities may be more complex than for issuers of higher-quality debt securities, and the Fund’s ability to achieve its investment objectives may, to the extent the Fund invests in below investment-grade fixed-income securities, be more dependent upon the Adviser’s credit analysis than would be the case if the Fund were investing in higher-quality securities. The issuers of these securities may be in default or have a currently identifiable vulnerability to default on their payments of principal and interest, or may otherwise present elements of danger with respect to payments of principal or interest.

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Investment Goals, Strategies and Risks Below investment-grade fixed-income securities may be more susceptible to real or perceived adverse economic and competitive industry conditions than higher-grade securities. Yields on below investment-grade fixed-income securities will fluctuate. If the issuer of below investment-grade fixed-income securities defaults, the Fund may incur additional expenses to seek recovery.Credit/Counterparty Risk
Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments. Foreign securities may be subject to increased credit risk because of the potential difficulties of requiring foreign entities to honor their contractual commitments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains. Currency RiskThis is the risk that fluctuations in exchange rates between the U.S. dollar and foreign currencies and between various foreign currencies may cause the value of the Fund’s investments to decline. The market for some (or all) currencies may from time to time have low trading volume and become illiquid, which may prevent the Fund from effecting positions or from promptly liquidating unfavorable positions in such markets, thus subjecting the Fund to substantial losses.Derivatives Risk
Derivatives are financial contracts whose value depends upon or is derived from the value of an underlying asset, reference rate or index. Examples of derivatives include futures contracts, swaps and forward transactions. The Fund expects to make extensive use of derivative transactions. Therefore, the performance of the Fund may depend to a great extent on the success of the Adviser’s derivative strategies. This use of derivatives for these purposes entails greater risk than using derivatives solely for hedging purposes. The Fund’s use of derivatives, such as futures, forward contracts, options, warrants, foreign currency transactions, swaps and credit default swaps, involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward contracts, swaps and other over-the-counter derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices, liquidity risk, allocation risk and the risk of losing more than the initial margin required to initiate derivatives positions. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. The Adviser will attempt to ensure that at all times the Fund has sufficient liquid assets to enable it to satisfy its obligations under its derivative contracts; however, it is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. Emerging Markets RiskThis is the risk associated with investing in companies traded in emerging securities markets, which may be smaller and have shorter operating histories than companies in developed markets. Emerging markets involve risks in addition to, and greater than, those generally associated with investing in developed foreign markets. The extent of economic development, political stability, market depth, infrastructure, capitalization and regulatory oversight in emerging market economies is generally less than in more developed markets. Fixed-Income Securities Risk
Fixed-income securities are subject to credit risk, interest rate risk and liquidity risk. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. This means that you may lose money on your investment due to unpredictable drops in a security’s value or periods of below-average performance in a given security or in the securities market as a whole. In addition, an economic downturn or period of rising interest rates could adversely affect the market of these securities and reduce the Fund’s ability to sell them. Below investment-grade fixed-income securities may be subject to these risks to a greater extent than other fixed-income securities. These securities are considered predominantly speculative with respect to the issuer’s continuing ability to make principal and interest payments. Rule 144A fixed-income securities may be more illiquid than other fixed-income securities. Zero-coupon bonds may be subject to these risks to a greater extent than other fixed-income securities. Foreign Securities RiskThis is the risk associated with investments in issuers located in foreign countries. The Fund’s investments in foreign securities may experience more rapid and extreme changes in value than investments in securities of U.S. issuers. The securities markets of many foreign countries are relatively small, with a limited number of issuers and a small number of securities. In addition, foreign companies often are not subject to the same degree of regulation as U.S. companies. Reporting, accounting and auditing standards of foreign countries differ, in some cases significantly, from U.S. standards. Nationalization, expropriation or confiscatory taxation, currency blockage, political changes or diplomatic developments can cause the value of the Fund’s non-U.S.

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Investment Goals, Strategies and Risks investments to decline. In the event of nationalization, expropriation or other confiscation, the Fund could lose its entire foreign investment. Investments in emerging markets may be subject to these risks to a greater extent than those in more developed markets and securities of developed market companies that conduct substantial business in emerging markets may also be subject to greater risk. These risks also apply to securities of foreign issuers traded in the United States or through depositary receipt programs such as American Depositary Receipts. To the extent the Fund invests a significant portion of its assets in a specific geographic region, the Fund may have more exposure to regional political, economic, environmental, credit and information risks. Inflation/Deflation Risk
Inflation risk is the risk that the value of assets or income from investments will be worth less in the future as inflation decreases the present value of future payments. Deflation risk is the risk that prices throughout the economy decline over time (the opposite of inflation). Deflation may have an adverse effect on the creditworthiness of issuers and may make issuer default more likely, which may result in a decline in the value of the Fund’s portfolio. Because the Fund seeks positive returns that exceed the rate of inflation over time, if the portfolio managers’ inflation forecasts are incorrect, the Fund may be more severely impacted than other funds. Interest Rate RiskThis is the risk that changes in interest rates will affect the value of the Fund’s investments in fixed-income securities, such as bonds, notes, asset-backed securities and other income-producing securities and derivatives. Fixed-income securities are obligations of the issuer to make payments of principal and/or interest on future dates. Increases in interest rates may cause the value of the Fund’s investments to decline. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment. Generally, the value of fixed-income securities, including short-term fixed-income securities, rises when prevailing interest rates fall and falls when interest rates rise. A significant change in interest rates could cause the Fund’s share price (and the value of your investment) to change. Issuer RiskThe value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services. Leverage Risk
Use of derivative instruments may involve leverage. Leverage is the risk associated with securities or practices that multiply small index, market or asset price movements into larger changes in value. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. Leverage magnifies the potential for gain and the risk of loss. As a result, a relatively small decline in the value of the underlying investments could result in a relatively large loss. Although the Adviser will seek to manage the Fund’s risk from the leverage associated with derivative investments by closely monitoring the volatility of such investments, the Adviser may not be successful in this respect. The use of leverage will increase the impact of gains and losses on the Fund’s returns, and may lead to significant losses if investments are not successful. However, the Adviser will attempt to ensure that at all times, the Fund has sufficient liquid assets to enable it to satisfy its obligations under its derivative contracts.Liquidity RiskLiquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Derivatives and securities that involve substantial interest rate or credit risk tend to involve greater liquidity risk. In addition, liquidity risk tends to increase to the extent the Fund invests in securities whose sale may be restricted by law or by contract, such as Rule 144A securities. Investment in derivatives may be especially illiquid when compared to other securities, especially during periods of market stress. Similarly, the market for money market and similar instruments may become illiquid at certain times. At these times, it may be difficult to sell securities. Illiquid investments also may be difficult to value. Management RiskThis is the risk that a strategy used by the Fund’s portfolio managers may fail to produce the intended result. Market RiskThis is the risk that the market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions.Mortgage-Related and Asset-Backed Securities Risk
In addition to the risks associated with investments in fixed-income securities generally (for example, credit, liquidity and valuation risk), mortgage-related and asset-backed securities are subject to the risks of the mortgages and assets underlying the securities as well as prepayment risk, the risk that the securities may be prepaid and result in the reinvestment of the prepaid amounts in securities with lower yields than the prepaid obligations. Conversely, there is a risk that an unexpected rise in interest rates will extend the life of a mortgage-related or asset-backed security beyond the expected prepayment time, typically reducing the security’s value. The Fund also may incur a loss when there is a prepayment of securities that were purchased at

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Investment Goals, Strategies and Risks a premium. The Fund’s investments in other asset-backed securities are subject to risks similar to those associated with mortgage-related securities, as well as additional risks associated with the nature of the assets and the servicing of those assets. The market for mortgage-backed securities (and other asset-backed securities) has experienced high volatility and a lack of liquidity. As a result, the value of many of these securities has significantly declined. There can be no assurance that these markets will become more liquid or less volatile, and it is possible that the value of these securities could decline further. Non-Diversification RiskCompared with other mutual funds, the Fund may invest a greater percentage of its assets in a particular issuer and may invest in fewer issuers. Therefore, the Fund may have more risk because changes in the value of a single security or the impact of a simple economic, political or regulatory occurrence may have a greater adverse impact on the Fund’s NAV. Short Exposure RiskA short exposure through a derivative may present various risks, including credit/counterparty risk and leverage risk. If the value of the asset, asset class or index on which the Fund has obtained a short investment exposure increases, the Fund will incur a loss. Unlike a direct cash investment like a stock, bond or ETF, where the potential loss is limited to the purchase price, the potential risk of loss from a short exposure is theoretically unlimited. Moreover, there can be no assurance that securities necessary to cover a short position will be available for purchase.

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Investment Goals, Strategies and Risks Loomis Sayles Multi-Asset Real Return Fund Investment Goal The Fund seeks to maximize real returns consistent with prudent investment management. The investment goal is non-fundamental and may be changed without shareholder approval. The Fund will provide 60 days’ prior notice to shareholders before changing the investment goal.Principal Investment Strategies The Fund will pursue its investment goal primarily through exposure to investments in fixed-income securities, equity securities, currencies and commodity-linked instruments. The Fund expects that its exposure to these asset classes will often be obtained substantially through the use of derivative instruments. The Fund is designed for investors seeking “real returns” (i.e., total returns that exceed the rate of inflation over a full market cycle regardless of market conditions). Although the Fund seeks positive total returns over time, the Fund’s investment returns may be volatile over short periods of time. The Fund may outperform the overall securities market during periods of flat or negative market performance and may underperform during periods of strong market performance. There can be no assurance that the Fund’s returns over time or during any period will be positive or that the Fund will provide returns in excess of inflation over time or during any particular period. The Fund does not have limits on the duration of its portfolio, and the Fund’s duration will change over time.In selecting investments for the Fund, the Adviser seeks to draw on its macroeconomic research in global inflationary cycles to identify and to implement investment opportunities that it believes will outpace inflation in a variety of inflationary environments. Two inflationary conditions that the Adviser believes could emerge in the current global environment are:

• Classic Inflation, which often follows periods of constrained resources (such as labor or raw materials) and is the typical form of inflation in developed countries during the last quarter century; and
• Debt Induced Inflation, which often is prompted by high levels of debt relative to gross domestic product (“GDP”) and historically has often resulted in balance of payments crises and currency devaluation.

Using a global asset allocation analysis, the portfolio managers seek to identify the relative return potential of various asset classes. This analysis is intended to provide the foundation for weighting the asset classes as a whole to develop a portfolio with superior risk and return characteristics in the view of the Adviser. The Adviser expects to use a bottom-up investment process to generate investment ideas consistent with the expectations for the asset classes. This will utilize the Adviser’s robust research resources, which include, but are not limited to, fundamental and quantitative capabilities. Additionally, the portfolio managers will use risk management tools to construct the portfolio and manage risk and volatility on an ongoing basis with an objective of targeting a relatively stable level of annualized volatility for the Fund’s overall portfolio. The portfolio management team expects to actively evaluate each investment idea based upon its return potential, its level of risk and its fit within the team’s overall macro strategy when deciding whether to buy or sell investments, with the goal of continually optimizing the Fund’s portfolio.The Fund will pursue its investment goal by obtaining long investment exposures through direct cash investments and derivatives and short investment exposures substantially through derivatives. A “long” investment exposure is an investment that rises in value with a rise in the value of an asset, asset class or index and declines in value with a decline in the value of that asset, asset class or index. A “short” investment exposure is an investment that rises in value with a decline in the value of an asset, asset class or index and declines in value with a rise in the value of that asset, asset class or index. The Fund’s long and short investment exposures may, at times, each reach 100% of the assets invested in the Fund (excluding instruments primarily used for duration management and short-term investments (such as cash and money market instruments)), although these exposures may be higher or lower at any given time.Fixed-Income Investments. Under normal market conditions, the Fund expects to invest at least 50% of its total assets in fixed-income securities and derivatives that have returns related to the returns on fixed-income securities. At times, the Fund expects to gain this exposure substantially through the use of derivatives. The Fund may invest in a broad range of U.S. and non-U.S. fixed-income securities, including, but not limited to, corporate bonds, municipal securities, U.S. and non-U.S. government securities (including their agencies, instrumentalities and sponsored entities), securities of supranational entities, partnership securities, commercial and residential mortgage-backed securities, other mortgage-related securities (such as adjustable rate mortgage securities), asset-backed securities, bank loans, depositary receipts, convertible bonds, Rule 144A securities, REITs, zero-coupon securities, step coupon securities, stripped securities, pay-in-kind securities, inflation-linked bonds, variable and floating rate securities, when-issued securities, private placements, privatizations, hybrid instruments, structured investments, repurchase agreements and commercial paper. The Fund may invest in securities of any maturity, market sector or credit quality, including below investment-grade fixed-income securities (also known as “junk bonds”). Below investment-grade fixed-income securities are below investment-grade quality (i.e., none of the three major rating agencies (Moody’s, Fitch or S&P) have rated the securities in one of their top four ratings categories) or, if the security is unrated, the Adviser has determined it to be of comparable quality. Equity Investments. Although the Fund expects that in normal market conditions it will have net long equity exposures, in the Adviser’s sole discretion the Fund may have net short equity exposures of up to 35% of the Fund’s total assets and gross short equity exposures of up to 70% of the Fund’s total assets. At times, the Fund expects to gain this exposure substantially through the use of derivatives. For these purposes, a short equity position is a position that will decline in value with a rise of the equity markets. A gross short equity position represents the total of all short positions without regard

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Investment Goals, Strategies and Risks to any offsetting long positions. A net short equity position is the total of all short positions offset by any long positions (e.g., a direct investment in a stock). The Adviser may have net short equity exposures for investment or hedging purposes, including but not limited to macro hedges to protect the Fund’s entire portfolio or more targeted hedges to neutralize specific components of the Fund’s equity market exposure. The Fund may invest in a broad range of U.S. and non-U.S. equity securities, including, but not limited to, common and preferred stocks, convertible preferred stocks, depositary receipts, warrants, rights, Rule 144A securities, private placements, privatizations, hybrid instruments, equity-linked securities and other equity interests. The Fund may invest in securities of issuers of any market capitalization. In addition to direct investment in securities and other instruments, the Fund may invest in other funds, including ETFs, unit investment trusts, and other pooled investment vehicles that may or may not be registered under the 1940 Act. The Fund may invest in REITs and U.S. and non-U.S. real estate companies.Non-U.S. Currency Investments. Under normal market conditions, the Fund expects to invest up to 30% of its total assets in investments in non-U.S. currencies, securities denominated in non-U.S. currencies and related derivative transactions. The Fund may engage in a broad range of transactions involving non-U.S. currencies, including, but not limited to, purchasing and selling forward currency exchange contracts in non-U.S. currencies, investing in non-U.S. currency futures contracts, investing in options on non-U.S. currencies and non-U.S. currency futures, cross-hedging between two or more currencies, investing directly in non-U.S. currencies and investing in securities denominated in non-U.S. currencies, including securities of emerging market issuers. The Fund may engage in non-U.S. currency transactions for investment or for hedging purposes. Currency positions that are intended to hedge the Fund’s non-U.S. currency exposure (i.e., currency positions that are not made for investment purposes) will offset positions in the same currency that are made for investment purposes when calculating the 30% limitation in investments in non-U.S. currency investments because the Fund believes that hedging a currency position is likely to negate some or all of the currency risk associated with the original currency position.Commodity Investments. Under normal market conditions, the Fund expects that up to 25% of its total assets will be invested in commodity-linked instruments. Commodities are assets that have tangible properties, such as oil, metals, and agricultural products. A “commodity-linked instrument” is an instrument whose value is linked to the price movement of a commodity, a commodity index, or a commodity option or futures contract. An investment in a commodity-linked instrument does not generally provide a claim to the tangible underlying commodity. The Fund and the Commodity Subsidiary may invest in a broad range of commodity-linked instruments, including, but not limited to, commodity-linked derivatives (such as commodity-linked swaps, futures, options or options on futures), commodity-linked debt (including leveraged or unleveraged notes that are derivative debt instruments with principal and/or coupon payments linked to the performance of commodities) or commodity-linked ETFs (i.e., ETFs that have their value derived from the price movement of an underlying commodity). The Fund also may invest in equity and fixed-income securities of issuers in commodity-related industries (for example, mining companies). These investments will not be counted toward the 25% limitation on investments in commodity-linked instruments, but rather will be considered investments in equity securities or fixed-income securities, as appropriate. The Fund expects to obtain its investment exposure to commodity-linked instruments in whole or in significant part indirectly by investing in the Commodity Subsidiary, although in certain circumstances it is possible that the Fund may also invest directly in certain commodity-linked instruments. The Commodity Subsidiary is advised by the Adviser and will invest primarily in commodity-linked instruments and fixed-income securities and other investments that serve as collateral for its derivative positions. The Fund may invest up to 25% of its total assets in the Commodity Subsidiary.Derivative Investments. The Fund may invest substantially in a broad range of derivative instruments for both hedging and investment purposes, including, but not limited to, futures contracts (such as futures that provide for physical delivery, treasury futures, single stock futures, and index futures), forward contracts, options (such as options on futures contracts, options on securities, options on securities indices, interest rate/bond options, currency options, options on swaps and exchange-traded and over-the-counter options), warrants (such as index warrants), swap transactions (such as interest rate swaps, total return swaps, index swaps and equity swaps), structured notes, foreign currency transactions, commodity-linked derivatives and credit default swaps. The Fund may, at times, invest substantially all of its assets in derivatives and securities used to support its obligations under those derivatives. Derivative instruments (such as those listed above) can be used to acquire or to transfer the risk and returns of a security without buying or selling the security. The Fund’s strategy may be highly dependent on the use of derivatives, and to the extent that they become unavailable or unattractive the Fund may be unable to fully implement its investment strategy.The Fund’s use of derivatives may cause it to be leveraged. Leverage leads to investment exposure in excess of the amount actually invested in the Fund and increases risk.The Fund is non-diversified, which means that it is not limited to a percentage of assets that it may invest in any one issuer. Because the Fund may invest in the securities of a limited number of issuers, an investment in the Fund may involve a higher degree of risk than would be present in a diversified portfolio.
The Fund expects to engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance.The percentage limitations set forth herein are not investment restrictions and the Fund may exceed these limits from time to time. In addition, when calculating these exposures, the Fund may use the notional value or an adjusted notional value of a derivative in order to reflect what the Adviser believes to be the most accurate assessment of the Fund’s real economic exposure.Although the Fund will not concentrate more than 25% of its total assets in issuers in any one industry, it may maintain aggregate exposure of more than 25% of its total assets to commodity-linked and commodity-related investments, and therefore may be significantly exposed to commodity-related risks.

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Investment Goals, Strategies and Risks As a temporary defensive measure, the Fund may hold any portion of its assets in cash (U.S. dollars, foreign currencies or multinational currency units) and/or invest in money market instruments or high quality debt securities and take other defensive positions as the Adviser deems appropriate. The Fund may miss certain investment opportunities if it uses defensive strategies and thus may not achieve its investment goal.Principal Investment RisksThe Fund has principal investment strategies that come with inherent risks. The principal risks of investing in the Fund are summarized in the Fund Summary under “Principal Investment Risks.” The Fund does not represent a complete investment program. The following is a list of the risks to which the Fund may be subject because of its investments in various types of securities or engagement in various practices. Because of the Fund’s use of derivative instruments, the Fund may be subject to many of the risks below indirectly through its derivative transactions. For example, to the extent the Fund enters into an interest rate swap contract, the Fund will be subject to “interest rate” risk. Agency Securities Risk
Agency securities are subject to fixed-income securities risk, as described herein. Certain debt securities issued or guaranteed by agencies of the U.S. government are guaranteed as to the payment of principal and interest by the relevant entity but have not been backed by the full faith and credit of the U.S. government. Instead, they have been supported only by the discretionary authority of the U.S. government to purchase the agency’s obligations. An event affecting the guaranteeing entity could adversely affect the payment of principal or interest or both on the security and, therefore, these types of securities should be considered to be riskier than U.S. government securities. In addition, in 2008 the U.S. Treasury Department placed certain government-sponsored companies into conservatorship. The companies remain in conservatorship, and the effect that this conservatorship will have on the companies’ debt and equity securities is unclear. Below Investment-Grade Fixed-Income Securities Risk
Below investment-grade fixed-income securities, also known as “junk bonds,” are rated below investment-grade quality and may be considered speculative with respect to the issuer’s continuing ability to make principal and interest payments. To be considered rated below investment-grade quality, none of the three major rating agencies (Moody’s, Fitch or S&P) must have rated the security in one of their respective top four rating categories at the time the Fund acquires the security or, if the security is unrated, the Adviser has determined it to be of comparable quality. Analysis of the creditworthiness of issuers of below investment-grade fixed-income securities may be more complex than for issuers of higher-quality debt securities, and the Fund’s ability to achieve its investment objectives may, to the extent the Fund invests in below investment-grade fixed-income securities, be more dependent upon the Adviser’s credit analysis than would be the case if the Fund were investing in higher-quality securities. The issuers of these securities may be in default or have a currently identifiable vulnerability to default on their payments of principal and interest, or may otherwise present elements of danger with respect to payments of principal or interest.Below investment-grade fixed-income securities may be more susceptible to real or perceived adverse economic and competitive industry conditions than higher-grade securities. Yields on below investment-grade fixed-income securities will fluctuate. If the issuer of below investment-grade fixed-income securities defaults, the Fund may incur additional expenses to seek recovery.Commodity Risk
Because a significant portion of the Fund’s assets may be invested in commodity-linked and commodity-related investments, exposure to which will often be obtained substantially through the use of derivative instruments, the Fund may be subject to the risks of investing in commodities and derivatives risk. Exposure to the commodities markets may subject the Fund to greater volatility than investments in other securities. The value of these investments may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. The prices of energy, industrial metals, precious metals, agriculture and livestock sector commodities may fluctuate widely due to factors such as changes in value, supply and demand and governmental regulatory policies. The energy sector can be significantly affected by changes in the prices and supplies of oil and other energy fuels, energy conservation, the success of exploration projects, and tax and other government regulations, policies of the Organization of Petroleum Exporting Countries (“OPEC”) and relationships among OPEC members and between OPEC and oil-importing nations. The metals sector can be affected by sharp price volatility over short periods caused by global economic, financial and political factors, resource availability, government regulation, economic cycles, changes in inflation or expectations about inflation in various countries, interest rates, currency fluctuations, metal sales by governments, central banks or international agencies, investment speculation and fluctuations in industrial and commercial supply and demand. Commodity-linked instruments may be issued by companies in the financial services sector, including the banking, brokerage and insurance sectors. As a result, events affecting issues in the financial services sector may cause the Fund’s share value to fluctuate. Commodity-linked instruments may be more volatile than the underlying commodities. The Fund intends to gain exposure to commodities in whole or in significant part indirectly by investing in the Commodity Subsidiary, a non-U.S. entity that will be treated as a corporation for U.S. federal income tax purposes. The Fund’s ability to invest in commodity-linked instruments, and the means through which any such investments may be made, will be limited by tax considerations. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund.

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Investment Goals, Strategies and Risks Commodity Subsidiary RiskInvesting in a wholly-owned commodity subsidiary organized under the laws of a non-U.S. jurisdiction, such as the Commodity Subsidiary, will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments. The Commodity Subsidiary is not registered under the 1940 Act, and unless otherwise noted, is not subject to all of the investor protections of the 1940 Act. However, the Commodity Subsidiary is wholly-owned and controlled by the Fund and therefore, is unlikely to take action contrary to the interests of the Fund or its shareholders. In monitoring compliance with its investment restrictions, the Fund will consider the assets of the Commodity Subsidiary to be assets of the Fund. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its shareholders. For example, the Cayman Islands do not currently impose any income, corporate or capital gains tax, estate duty, inheritance tax, gift tax or withholding tax on the Commodity Subsidiary. If Cayman Islands law changes such that the Commodity Subsidiary is required to pay Cayman Islands taxes, the Fund’s shareholders may suffer decreased investment returns.Credit/Counterparty Risk
Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments. Foreign securities may be subject to increased credit risk because of the potential difficulties of requiring foreign entities to honor their contractual commitments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains. Currency RiskThis is the risk that fluctuations in exchange rates between the U.S. dollar and foreign currencies and between various foreign currencies may cause the value of the Fund’s investments to decline. The market for some (or all) currencies may from time to time have low trading volume and become illiquid, which may prevent the Fund from effecting positions or from promptly liquidating unfavorable positions in such markets, thus subjecting the Fund to substantial losses.Derivatives Risk
Derivatives are financial contracts whose value depends upon or is derived from the value of an underlying asset, reference rate or index. Examples of derivatives include futures contracts, swaps and forward transactions. The Fund expects to make extensive use of derivative transactions. Therefore, the performance of the Fund may depend to a great extent on the success of the Adviser’s derivative strategies. This use of derivatives for these purposes entails greater risk than using derivatives solely for hedging purposes. The Fund’s use of derivatives, such as futures, forward contracts, options, warrants, swaps, structured notes, foreign currency transactions, commodity-linked derivatives and credit default swaps, involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward contracts, swaps and other over-the-counter derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices, liquidity risk, allocation risk and the risk of losing more than the initial margin required to initiate derivatives positions. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. The Adviser will attempt to ensure that at all times the Fund has sufficient liquid assets to enable it to satisfy its obligations under its derivative contracts; however, it is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. The use of derivatives for other than hedging purposes may be considered a speculative activity, and involves greater risks than are involved in hedging. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. Emerging Markets RiskThis is the risk associated with investing in companies traded in emerging securities markets, which may be smaller and have shorter operating histories than companies in developed markets. Emerging markets involve risks in addition to, and greater than, those generally associated with investing in developed foreign markets. The extent of economic development, political stability, market depth, infrastructure, capitalization and regulatory oversight in emerging market economies is generally less than in more developed markets.Equity Securities RiskThe value of your investment in the Fund is based on the market value (or price) of the securities the Fund holds. You may lose money on your investment due to unpredictable drops in the value of a security or periods of below-average performance in a given stock or the stock market as a whole. The value of the Fund’s investments in equity securities is subject to the risks of unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. The market value of a security can change daily due to political, economic and other events that affect the securities markets generally, as well as those that affect particular companies or governments. These price

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Investment Goals, Strategies and Risks movements, sometimes called volatility, will vary depending on the types of securities the Fund owns and the markets in which they trade. Historically, the equity markets have moved in cycles, and the value of the Fund’s equity securities may fluctuate drastically from day to day. Individual companies may report poor results or be negatively affected by industry and/or economic trends and developments. The prices of securities issued by such companies may suffer a decline in response to such trends and developments. Equity securities may include common stocks, preferred stocks, warrants, securities convertible into common or preferred stocks and other equity-like interests in an entity. Common stocks represent an equity or ownership interest in an issuer. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock. Equity securities may take the form of stock in corporations, real estate investment trusts (“REITs”) or other trusts and other similar securities. Fixed-Income Securities Risk
Fixed-income securities are subject to credit risk, interest rate risk and liquidity risk. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. This means that you may lose money on your investment due to unpredictable drops in a security’s value or periods of below-average performance in a given security or in the securities market as a whole. In addition, an economic downturn or period of rising interest rates could adversely affect the market of these securities and reduce the Fund’s ability to sell them. Below investment-grade fixed-income securities may be subject to these risks to a greater extent than other fixed-income securities. These securities are considered predominantly speculative with respect to the issuer’s continuing ability to make principal and interest payments. Rule 144A fixed-income securities may be more illiquid than other fixed-income securities. Zero-coupon bonds may be subject to these risks to a greater extent than other fixed-income securities. Foreign Securities RiskThis is the risk associated with investments in issuers located in foreign countries. The Fund’s investments in foreign securities may experience more rapid and extreme changes in value than investments in securities of U.S. issuers. The securities markets of many foreign countries are relatively small, with a limited number of issuers and a small number of securities. In addition, foreign companies often are not subject to the same degree of regulation as U.S. companies. Reporting, accounting and auditing standards of foreign countries differ, in some cases significantly, from U.S. standards. Nationalization, expropriation or confiscatory taxation, currency blockage, political changes or diplomatic developments can cause the value of the Fund’s non-U.S. investments to decline. In the event of nationalization, expropriation or other confiscation, the Fund could lose its entire foreign investment. Investments in emerging markets may be subject to these risks to a greater extent than those in more developed markets and securities of developed market companies that conduct substantial business in emerging markets may also be subject to greater risk. These risks also apply to securities of foreign issuers traded in the United States or through depositary receipt programs such as American Depositary Receipts. To the extent the Fund invests a significant portion of its assets in a specific geographic region, the Fund may have more exposure to regional political, economic, environmental, credit and information risks. Inflation/Deflation Risk
Inflation risk is the risk that the value of assets or income from investments will be worth less in the future as inflation decreases the present value of future payments. Deflation risk is the risk that prices throughout the economy decline over time (the opposite of inflation). Deflation may have an adverse effect on the creditworthiness of issuers and may make issuer default more likely, which may result in a decline in the value of the Fund’s portfolio. Because the Fund seeks positive returns that exceed the rate of inflation over time, if the portfolio managers’ inflation forecasts are incorrect, the Fund may be more severely impacted than other funds. Interest Rate RiskThis is the risk that changes in interest rates will affect the value of the Fund’s investments in fixed-income securities, such as bonds, notes, asset-backed securities and other income-producing securities and derivatives. Fixed-income securities are obligations of the issuer to make payments of principal and/or interest on future dates. Increases in interest rates may cause the value of the Fund’s investments to decline. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment. Generally, the value of fixed-income securities, including short-term fixed-income securities, rises when prevailing interest rates fall and falls when interest rates rise. A significant change in interest rates could cause the Fund’s share price (and the value of your investment) to change. Investments in Other Investment Companies RiskThe Fund will indirectly bear the management service and other fees of the other investment company in addition to its own expenses. Issuer RiskThe value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services. Leverage Risk
Use of derivative instruments may involve leverage. Leverage is the risk associated with securities or practices that multiply small index, market or asset price movements into larger changes in value. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. Leverage magnifies the potential for gain and the risk of loss. As a result, a relatively small decline in the value

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Investment Goals, Strategies and Risks of the underlying investments could result in a relatively large loss. Although the Adviser will seek to manage the Fund’s risk from the leverage associated with derivative investments by closely monitoring the volatility of such investments, the Adviser may not be successful in this respect. The use of leverage will increase the impact of gains and losses on the Fund’s returns, and may lead to significant losses if investments are not successful. However, the Adviser will attempt to ensure that at all times, the Fund has sufficient liquid assets to enable it to satisfy its obligations under its derivative contracts. Liquidity RiskLiquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Derivatives and securities that involve substantial interest rate or credit risk tend to involve greater liquidity risk. In addition, liquidity risk tends to increase to the extent the Fund invests in securities whose sale may be restricted by law or by contract, such as Rule 144A securities. Investment in derivatives may be especially illiquid when compared to other securities, especially during periods of market stress. Similarly, the market for money market and similar instruments may become illiquid at certain times. At these times, it may be difficult to sell securities. Illiquid investments also may be difficult to value. Management RiskThis is the risk that a strategy used by the Fund’s portfolio managers may fail to produce the intended result. Market RiskThis is the risk that the market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions.Mortgage-Related and Asset-Backed Securities Risk
In addition to the risks associated with investments in fixed-income securities generally (for example, credit, liquidity and valuation risk), mortgage-related and asset-backed securities are subject to the risks of the mortgages and assets underlying the securities as well as prepayment risk, the risk that the securities may be prepaid and result in the reinvestment of the prepaid amounts in securities with lower yields than the prepaid obligations. Conversely, there is a risk that an unexpected rise in interest rates will extend the life of a mortgage-related or asset-backed security beyond the expected prepayment time, typically reducing the security’s value. The Fund also may incur a loss when there is a prepayment of securities that were purchased at a premium. The Fund’s investments in other asset-backed securities are subject to risks similar to those associated with mortgage-related securities, as well as additional risks associated with the nature of the assets and the servicing of those assets. The market for mortgage-backed securities (and other asset-backed securities) has experienced high volatility and a lack of liquidity. As a result, the value of many of these securities has significantly declined. There can be no assurance that these markets will become more liquid or less volatile, and it is possible that the value of these securities could decline further. Non-Diversification RiskCompared with other mutual funds, the Fund may invest a greater percentage of its assets in a particular issuer and may invest in fewer issuers. Therefore, the Fund may have more risk because changes in the value of a single security or the impact of a simple economic, political or regulatory occurrence may have a greater adverse impact on the Fund’s NAV. Short Exposure RiskA short exposure through a derivative may present various risks, including credit/counterparty risk and leverage risk. If the value of the asset, asset class or index on which the Fund has obtained a short investment exposure increases, the Fund will incur a loss. Unlike a direct cash investment like a stock, bond or ETF, where the potential loss is limited to the purchase price, the potential risk of loss from a short exposure is theoretically unlimited. Moreover, there can be no assurance that securities necessary to cover a short position will be available for purchase.

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Management TeamPercentage Investment Limitations. Except as set forth in the SAI, the percentage limitations set forth in this Prospectus and the SAI apply at the time an investment is made and shall not be considered violated unless an excess or deficiency occurs or exists immediately after and as a result of such investment. Portfolio HoldingsA description of each Fund’s policies and procedures with respect to the disclosure of each Fund’s portfolio securities is available in the section “Portfolio Holdings Information” in the SAI. A “snapshot” of each Fund’s investments may be found in its annual and semiannual reports. In addition, a list of each Fund’s full portfolio holdings, which is updated monthly after an aging period of at least 7 days for ASG Diversifying Strategies Fund, ASG Global Alternatives Fund and ASG Managed Futures Strategy Fund and 30 days for Gateway Fund, Loomis Sayles Absolute Strategies Fund and Loomis Sayles Multi-Asset Real Return Fund, is available on the Funds’ website at ga.natixis.com (select the name of the Fund in the “Find a fund” box and then click “Holdings”). These holdings will remain accessible on the website until each Fund files its Form N-CSR or Form N-Q with the Securities and Exchange Commission (the “SEC”) for the period that includes the date of the information. In addition, a list of the Loomis Sayles Funds’ top 10 holdings as of the month-end is generally available within 7 business days after the month-end on the Funds’ website at ga.natixis.com (select the name of the Fund in the “Find a fund” box and then click “Holdings”). Management TeamMeet the Funds’ Investment Advisers and SubadviserThe Natixis Funds family currently includes 29 mutual funds (the “Natixis Funds”). The Natixis Funds family had combined assets of $34.8 billion as of December 31, 2010. Natixis Funds are distributed through Natixis Distributors, L.P. (the “Distributor”).Advisers AlphaSimplex Group, LLC (“AlphaSimplex”), located at One Cambridge Center, Cambridge, Massachusetts 02142, serves as the adviser to the ASG Diversifying Strategies Fund, the ASG Global Alternatives Fund and the ASG Managed Futures Strategy Fund. AlphaSimplex was founded in 1999 and as of December 31, 2010, it serves as investment adviser or subadviser with respect to assets of $1.41 billion.Gateway Investment Advisers, LLC (“Gateway”), located at 312 Walnut St., 35th Floor, Cincinnati, OH 45202-9834, serves as investment adviser to the Gateway Fund. Gateway had approximately $7.7 billion in assets under management at December 31, 2010.Loomis Sayles, located at One Financial Center, Boston, Massachusetts 02111, serves as adviser to the Loomis Sayles Absolute Strategies Fund and the Loomis Sayles Multi-Asset Real Return Fund.Founded in 1926, Loomis Sayles is one of the oldest investment advisory firms in the United States with over $151.6 billion in assets under management as of December 31, 2010. Loomis Sayles has an extensive internal research staff. Loomis Sayles makes investment decisions for the Loomis Sayles Absolute Strategies Fund and the Loomis Sayles Multi-Asset Real Return Fund.AlphaSimplex, Gateway and Loomis Sayles are subsidiaries of Natixis Global Asset Management, L.P. (“Natixis US”), which is part of Natixis Global Asset Management, an international asset management group based in Paris, France. Natixis Global Asset Management is principally owned by BPCE, France’s second largest banking group. BPCE is owned by banks comprising two autonomous and complementary retail banking networks consisting of the Caisse d’Epargne regional savings banks and the Banque Populaire regional cooperative banks. The registered address of Natixis is 30, avenue Pierre Mendès France, 75013 Paris, France. The registered address of BPCE is 50, avenue Pierre Mendès France, 75013 Paris, France. Natixis US has 14 principal subsidiary or affiliated asset management firms that collectively had over $291.8 billion in assets under management as of December 31, 2010.The aggregate advisory and subadvisory fees paid by the Funds during the fiscal year ended December 31, 2010, as a percentage of each Fund’s average daily net assets, were 0.84% for ASG Diversifying Strategies Fund (after waiver), 1.09% for ASG Global Alternatives Fund (after waiver), 0.06% for ASG Managed Futures Strategy Fund (after waiver), 0.59% for Gateway Fund (after waiver), 0.00% for Loomis Sayles Absolute Strategies Fund (after waiver) and 0.00% for Loomis Sayles Multi-Asset Real Return Fund (after waiver).

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Management Team Subadviser Reich & Tang, located at 1411 Broadway, 28th Floor, New York, New York 10018-3450, serves as the subadviser to the ASG Diversifying Strategies Fund, the ASG Global Alternatives Fund and the ASG Managed Futures Strategy Fund. Reich & Tang is a limited liability company with 100% of its membership interest owned by Natixis US. Reich & Tang’s origins date back to 1970, and as of December 31, 2010, it is the investment manager, adviser or subadviser with respect to assets in excess of $12 billion. A discussion of the factors considered by the Board of Trustees in approving the Funds’ investment advisory and sub-advisory contracts is available in the annual report for the twelve months ended December 31, 2009 for the ASG Diversifying Strategies Fund, the semiannual report for the six months ended June 30, 2010 for the Gateway Fund and the ASG Global Alternatives Fund and the annual report for the twelve months ended December 31, 2010 for the ASG Managed Futures Strategy Fund, the Loomis Sayles Absolute Strategies Fund and the Loomis Sayles Multi-Asset Real Return Fund.Portfolio TradesIn placing portfolio trades, the Advisers and Subadviser may use brokerage firms that market each Fund’s shares or are affiliated with Natixis US and the Advisers. In placing trades, the Advisers and Subadviser will seek to obtain the best combination of price and execution, which involves a number of subjective factors. Such portfolio trades are subject to applicable regulatory restrictions and related procedures adopted by the Board of Trustees. Securities Lending. Each of Loomis Sayles Absolute Strategies Fund and Loomis Sayles Multi-Asset Real Return Fund may lend a portion of its portfolio securities to brokers, dealers and other financial institutions provided a number of conditions are satisfied, including that the loan is fully collateralized. Please see “Investment Strategies” in the SAI for details. When a Fund lends portfolio securities, its investment performance will continue to reflect changes in the value of the securities loaned and a Fund will also receive a fee or interest on the collateral. These fees or interest are income to each Fund, although each Fund often must share the income with the securities lending agent and/or the borrower. Securities lending involves, among other risks, the risk of loss of rights in the collateral or delay in recovery of the collateral if the borrower fails to return the security loaned or becomes insolvent. A Fund may pay lending fees to the party arranging the loan.In addition, any investment of cash is generally at the sole risk of the Funds. Any income or gains and losses from investing and reinvesting any cash collateral delivered by a borrower pursuant to a loan are generally at the Fund’s risk, and to the extent any such losses reduce the amount of cash below the amount required to be returned to the borrower upon the termination of any loan, the Funds may be required by the securities lending agent to pay or cause to be paid to such borrower an amount equal to such shortfall in cash, possibly requiring it to liquidate other portfolio securities to satisfy its obligations. Each Fund’s securities lending activities are implemented pursuant to policies and procedures approved by the Board of Trustees and are subject to Board oversight. Transactions with Other Investment Companies. Pursuant to SEC exemptive relief, each Fund may be permitted to invest its daily cash balances in shares of money market and short-term bond funds advised by Natixis Asset Management Advisors, L.P. (“Natixis Advisors”) (an affiliate of AlphaSimplex, Gateway and Loomis Sayles) or its affiliates (“Central Funds”). The Central Funds currently include one money market fund: the Daily Income Fund. The Daily Income Fund is advised by Reich & Tang Asset Management, LLC (“Reich & Tang”). Because AlphaSimplex, Gateway, Loomis Sayles, Natixis Advisors and Reich & Tang are subsidiaries of Natixis US, the Funds and the Central Funds may be considered to be related companies comprising a “group of investment companies” under the 1940 Act.Pursuant to such exemptive relief, the Funds may also borrow and lend money for temporary or emergency purposes directly to and from other funds through an interfund credit facility. In addition to the Funds and the Central Funds, series of the following mutual fund groups may also be able to participate in the facility: Natixis Funds Trust I (except the CGM Advisor Targeted Equity Fund series), Natixis Funds Trust II, Natixis Funds Trust IV, Harris Associates Investment Trust, Loomis Sayles Funds I, Loomis Sayles Funds II and Gateway Trust. The advisers and subadvisers to these mutual funds currently include Natixis Advisors, Reich & Tang, Loomis Sayles, Absolute Asia Asset Management Limited, AEW Capital Management, L.P., AlphaSimplex Group, Gateway, Hansberger Global Investors, Inc., Harris Associates, L.P., Vaughan Nelson Investment Management, L.P. and Westpeak Global Advisors, L.P. (“Westpeak”). Each of these advisers and subadvisers (except Westpeak) are subsidiaries of Natixis US and are thus “affiliated persons” under the 1940 Act by reason of being under common control by Natixis US. In addition, because the Funds, and other funds, are advised by firms that are affiliated with one another, they may be considered to be related companies comprising a “group of investment companies” under the 1940 Act. The Central Funds will participate in the credit facility only as lenders. Participation in such an interfund lending program would be voluntary for both borrowing and lending funds, and a Fund would participate in an interfund lending program only if the Board of Trustees determined that doing so would benefit that Fund. Should a Fund participate in such an interfund lending program, the Board of Trustees would establish procedures for the operation of the program by the advisers or an affiliate. The Funds may engage in the transactions described above without further notice to shareholders. The Funds may also make investments in related investment companies to the extent permitted by SEC regulation. Meet the Funds’ Portfolio Managers The following persons have had primary responsibility for the day-to-day management of each indicated Fund’s portfolio since the date stated below.

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Management Team AlphaSimplexAndrew W. Lo - Dr. Lo founded AlphaSimplex in 1999 and currently serves as the firm’s Chief Investment Strategist. He is also Chairman of AlphaSimplex’s Investment Committee and a member of AlphaSimplex’s Risk Committee. Dr. Lo has been a co-portfolio manager of the ASG Global Alternatives Fund since September 2008, the ASG Diversifying Strategies Fund since August 2009 and the ASG Managed Futures Strategy Fund since July 2010. Dr. Lo is the Harris & Harris Group Professor at Massachusetts Institute of Technology (“MIT”) and Director of MIT’s Laboratory for Financial Engineering.Jeremiah H. Chafkin - Mr. Chafkin has served as President of AlphaSimplex since 2007. He is also a member of AlphaSimplex’s Investment Committee and Risk Committee. Mr. Chafkin has been a co-portfolio manager of the ASG Global Alternatives Fund since September 2008, the ASG Diversifying Strategies Fund since August 2009 and the ASG Managed Futures Strategy Fund since July 2010. From 2006 until November 2007, Mr. Chafkin was President and Chief Executive Officer of the U.S. division of Natixis Global Asset Management. Mr. Chafkin served as president of Charles Schwab Investment Management from 1999 until 2002. From 1999 until 2006, Mr. Chafkin was an Executive Vice President at Charles Schwab. Mr. Chafkin headed investment advice and research for Charles Schwab from 2002 until 2006.Peter A. Lee - Mr. Lee joined AlphaSimplex in 2007 and currently serves as Research Scientist for hedge fund beta replication products. Mr. Lee has served as co-portfolio manager of the ASG Global Alternatives Fund since May 2010. Mr. Lee received an AB in Applied Mathematics with a secondary field in Economics from Harvard University in 2007.Philippe P. Lüdi - Dr. Lüdi joined AlphaSimplex in 2006 and currently serves as Vice President, focusing on Global Macro and Global Tactical Asset Allocation strategies. Dr. Lüdi has served as co-portfolio manager of the ASG Diversifying Strategies Fund since May 2010. Dr. Lüdi received the equivalents of an MA in Molecular and Computational Biology from the University of Basel in 2000, followed by an MS in Statistics in 2002 and a PhD in Bioinformatics in 2006, both from Duke University.Gateway J. Patrick Rogers - Mr. Rogers joined Gateway Investment Advisers, Inc., general partner of Gateway Investment Advisers, L.P., the predecessor to the Adviser (the “Predecessor Adviser”), in 1989 and has been its chief executive officer since 2006, its president and a member of its board of directors since 1995, and its chief investment officer from 1995 through 2005. He has been the co-portfolio manager for the Fund since December 2006. Mr. Rogers was previously portfolio manager from 1997 to December 2006 and prior to that co-portfolio manager from 1994. Mr. Rogers received a BBA from the University of Notre Dame in 1986 and an MBA from Xavier University in 1994. Mr. Rogers was the president of The Gateway Trust, the predecessor to the current Gateway Trust (the “Predecessor Trust”), from January 1997 and a trustee of the Predecessor Trust from December 1998. He holds the designation of Chartered Financial Analyst.Paul R. Stewart - Mr. Stewart joined the Predecessor Adviser in 1995. He served as treasurer of the Predecessor Trust through 1999 and as chief financial officer of the Predecessor Adviser through 2003. He became a senior vice president of the Predecessor Adviser and began working in the area of portfolio management in 2000. Mr. Stewart was appointed chief investment officer of the Predecessor Adviser in January 2006. He served as co-portfolio manager of the Fund since December 2006. Mr. Stewart received a BBA from Ohio University in 1988. He holds the designation of Chartered Financial Analyst.Michael T. Buckius - Mr. Buckius joined the Predecessor Adviser in 1999 and holds the positions of senior vice president and portfolio manager. He has been a co-portfolio manager of the Fund since June 2008 and serves as co-portfolio manager of three funds sub-advised by the Adviser. Mr. Buckius holds a B.A. and M.B.A. in Finance from Loyola College in Baltimore. He holds the designation of Chartered Financial Analyst.Loomis SaylesMatthew J. Eagan - Matthew J. Eagan has served as co-portfolio manager of the Loomis Sayles Absolute Strategies Fund since its inception in December 2010. Mr. Eagan, Vice President of Loomis Sayles, began his investment career in 1989 and joined Loomis Sayles in 1997. Mr. Eagan received a B.A. from Northeastern University and an M.B.A. from Boston University. He holds the designation of Chartered Financial Analyst. Mr. Eagan has over 21 years of investment experience. Kevin Kearns - Kevin Kearns has served as co-portfolio manager of the Loomis Sayles Absolute Strategies Fund since its inception in December 2010 and has served as co-portfolio manager of the Loomis Sayles Multi-Asset Real Return Fund since its inception in September 2010. Mr. Kearns, Vice President of Loomis Sayles, began his investment career in 1986 and joined Loomis Sayles in 2007. Prior to joining Loomis Sayles, he was the director of derivatives, quantitative analysis and risk management at Boldwater Capital Management. Mr. Kearns received a B.S. from Bridgewater State College and an M.B.A. from Bryant College. Mr. Kearns has over 24 years of investment experience.David Rolley - David Rolley has served as co-portfolio manager of the Loomis Sayles Multi-Asset Real Return Fund since its inception in September 2010. Mr. Rolley, Vice President of Loomis Sayles, began his investment career in 1980 and joined Loomis Sayles in 1994. Mr. Rolley holds the designation of Chartered Financial Analyst. He received a B.A. from Occidental College, studied graduate economics at the University of Pennsylvania and has over 30 years of investment experience.

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Management Team Laura Sarlo - Laura Sarlo has served as co-portfolio manager of the Loomis Sayles Multi-Asset Real Return Fund since its inception in September 2010. Ms. Sarlo, Vice President of Loomis Sayles, began her investment career in 1999 and joined Loomis Sayles in 2005. Prior to joining Loomis Sayles, she was a fixed-income analyst at State Street Research & Management. Prior to joining State Street Research & Management, she was a trader analyst at the Federal Reserve Bank of New York. Ms. Sarlo holds the designation of Chartered Financial Analyst. Ms. Sarlo received a B.A. from Drew University and an M.P.P. from Harvard University. Todd P. Vandam - Todd P. Vandam has served as co-portfolio manager of the Loomis Sayles Absolute Strategies Fund since its inception in December 2010. Mr. Vandam, Vice President of Loomis Sayles, began his investment career and joined Loomis Sayles in 1994. Mr. Vandam received a B.A. from Brown University. He holds the designation of Chartered Financial Analyst. Mr. Vandam has over 16 years of investment experience. Reich & Tang Robert S. Rickard - Mr. Rickard is a Senior Vice President of Reich & Tang, and head of Portfolio Management and Trading for the Reich & Tang Funds division, which specializes in cash management strategies. Mr. Rickard has been a co-portfolio manager of the ASG Global Alternatives Fund since September 2008, the ASG Diversifying Strategies Fund since August 2009 and the ASG Managed Futures Strategy Fund since July 2010. Mr. Rickard has focused on the management of short-term assets since joining Reich & Tang’s investment staff in 1992. Mr. Rickard holds a Master of Business Administration degree in Finance from Pace University and a Bachelor of Science in Accounting from Siena College.Please see the Funds’ SAI for information on portfolio manager compensation, other accounts under management by the portfolio managers and the portfolio managers’ ownership of securities in the Funds.Fund ServicesInvesting in the FundsChoosing a Share ClassEach Fund offers Class A and Class C shares to the public. Each class has different costs associated with buying, selling and holding Fund shares, which allows you to choose the class that best meets your needs. Which class is best for you depends upon a number of factors, including the size of your investment and how long you intend to hold your shares. Class C shares and certain shareholder features may not be available to you if you hold your shares in a street name account. Your financial representative can help you decide which class of shares is most appropriate for you. Class A Shares

• You pay a sales charge when you buy Class A shares. There are several ways to reduce this charge. See the section “How Sales Charges Are Calculated.”
• You pay lower annual expenses than Class C shares, giving you the potential for higher returns per share. However, where front-end sales charges are applicable, returns are earned on a smaller amount of your investment.
• You do not pay a sales charge on orders of $1 million or more, but you may pay a charge on redemptions if you redeem these shares within one year of purchase.
• The Gateway Fund acquired the assets and liabilities of the Gateway Predecessor Fund (as defined in the Gateway Fund’s prospectus under “Additional Information Regarding the Gateway Predecessor Fund”) in a Reorganization on February 15, 2008 and February 19, 2008, for the Class A shares and Class C shares, respectively. If you were a shareholder of the Gateway Predecessor Fund as of the date of the Reorganization, you are eligible to purchase additional Class A shares without a sales charge or a contingent deferred sales charge (“CDSC”), provided you have held fund shares in your existing account since that date.
  

Due to operational limitations at your financial intermediary, a sales charge or CDSC may be assessed unless you inform the financial intermediary at the time you make any additional purchase that you were a shareholder of the Gateway Predecessor Fund and are eligible to purchase Class A shares without a sales charge or CDSC. Notwithstanding the foregoing, former shareholders of the Gateway Predecessor Fund may not be eligible to purchase shares at NAV through a financial intermediary if the nature of your relationship with, and/or the services you receive from, the financial intermediary changes. Please consult your financial representative for further details. Class C Shares

• You do not pay a sales charge when you buy Class C shares. All of your money goes to work for you right away.
• You pay higher annual expenses than Class A shares.
• You may pay a sales charge on redemptions if you sell your Class C shares within one year of purchase.

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• Investors will not be permitted to purchase $1 million or more of Class C shares as a single investment per account. There may be certain exceptions to this restriction for omnibus and other nominee accounts. Investors may want to consider the lower operating expense of Class A shares in such instances. You may pay a charge on redemptions if you redeem Class A shares within one year of purchase.

For information about a Fund’s expenses, see the section “Fund Fees & Expenses” in each Fund Summary.CertificatesCertificates will not be issued or honored for any class of shares. How Sales Charges Are CalculatedClass A SharesThe price that you pay when you buy Class A shares (the “offering price”) is their net asset value (“NAV”) plus a sales charge (sometimes called a “front-end sales charge”) which varies depending upon the size of your purchase:Class A Sales Charges**

	All Funds Except Loomis Sayles Absolute Strategies Fund Loomis Sayles Multi-Asset Real Return Fund
Your Investment	As a % of offering price	As a % of your investment
Less than $50,000	5.75%	6.10%
$ 50,000 – $99,999	4.50%	4.71%
$ 100,000 – $249,999	3.50%	3.63%
$ 250,000 – $499,999	2.50%	2.56%
$ 500,000 – $999,999	2.00%	2.04%
$1,000,000 or more*	0.00%	0.00%

	Loomis Sayles Absolute Strategies Fund Loomis Sayles Multi-Asset Real Return Fund
Your Investment	As a % of offering price	As a % of your investment
Less than $100,000	4.50%	4.71%
$ 100,000 – $249,999	3.50%	3.63%
$ 250,000 – $499,999	2.50%	2.56%
$ 500,000 – $999,999	2.00%	2.04%
$1,000,000 or more*	0.00%	0.00%

Due to rounding, the actual sales charge for a particular transaction may be higher or lower than the rates listed above.

*	For purchases of Class A shares of the Fund of $1 million or more, there is no front-end sales charge, but a CDSC of 1.00% may apply to redemptions of your shares within one year of the date of purchase. See the section “How the CDSC is Applied to Your Shares.”
**	Not imposed on shares that are purchased with reinvested dividends or other distributions.

Investors who were Gateway Predecessor Fund shareholders as of the date of the Reorganization may purchase additional Class A shares of the Fund for their accounts existing as of the date of the Reorganization without the imposition of an initial sales charge or a CDSC.If you invest in Class A shares through a financial intermediary, it is the responsibility of the financial intermediary to ensure that you obtain the proper “breakpoint” discount. It will be necessary at the time of purchase to inform the Distributor and the financial intermediary of the existence of other accounts in which there are holdings eligible to be aggregated to meet sales load breakpoints of the Funds. You may be required to provide certain records and information, such as account statements, with respect to all of your accounts that hold shares, including accounts with other financial intermediaries and your family members’ and other related party accounts, in order to verify your eligibility for a reduced sales charge. If the Distributor is not notified that you are eligible for a reduced sales charge, the Distributor will be unable to ensure that the reduction is applied to your account. Additional information concerning sales load breakpoints is available from your financial intermediary, by visiting the Funds’ website at ga.natixis.com (click on “Sales Charges” at the bottom of the home page) or in the SAI.Reducing Front-End Sales ChargesThere are several ways you can lower your sales charge for Class A shares, including:

• Letter of Intent—By signing a Letter of Intent, you may purchase Class A shares of any Natixis Fund over a 13-month period but pay sales charges as if you had purchased all shares at once. This program can save you money if you plan to invest $50,000 or more (or $100,000 or more into Loomis Sayles Multi-Asset Real Return Fund or Loomis Sayles Absolute Strategies Fund) within 13 months. Purchases of all shares may be used toward meeting the Letter of Intent.
• Cumulative Purchase Discount—You may be entitled to a reduced sales charge if your “total investment” reaches a breakpoint for a reduced sales charge. The total investment is determined by adding the amount of your current purchase in a Fund, including the applicable sales charge, to the current public offering price of all series and classes of shares of the Natixis Funds held by you in one or more accounts. Certain shares held through Loomis Sayles Distributors, L.P. may not be eligible for this privilege. If your total investment exceeds a sales charge breakpoint in the table above, the lower sales charge applies to the entire amount of your current purchase in a Fund.

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Fund Services

• Combining Accounts—This allows you to combine shares of multiple Natixis Funds and classes for purposes of calculating your sales charge.

Individual Accounts: You may elect to combine your purchase(s) and your total investment, as defined above, with the purchases and total investment of your spouse, parents, children, siblings, grandparents, grandchildren, in-laws (of those previously mentioned), individual fiduciary accounts, sole proprietorships, single trust estates and any other individuals acceptable to the Distributor.Certain Retirement Plan Accounts: The Distributor may, at its discretion, combine the purchase(s) and total investment of all qualified participants in the same retirement plan for purposes of determining the availability of a reduced sales charge.In most instances, individual accounts may not be linked with certain retirement plan accounts for the purposes of calculating sales charges. Savings Incentive Match Plan for Employees (“SIMPLE IRA”) contributions will automatically be linked with those of other participants in the same SIMPLE IRA Plan (Class A shares only). SIMPLE IRA accounts may not be linked with any other Natixis Fund account for rights of accumulation. Please refer to the SAI for more detailed information on combining accounts.Eliminating Front-End Sales Charges and CDSCsClass A shares may be offered without front-end sales charges or a CDSC to the following individuals and institutions:

• Any government entity that is prohibited from paying a sales charge or commission to purchase mutual fund shares;
• Selling brokers, sales representatives, registered investment advisers, financial planners or other intermediaries under arrangements with the Distributor (this also applies to spouses and children under the age of 21 of those mentioned);
• Fund trustees, former trustees, employees of affiliates of the Natixis Funds and other individuals who are affiliated with any Natixis Fund (this also applies to any spouse, parents, children, siblings, grandparents, grandchildren and in-laws of those mentioned);
• Participants in certain retirement plans with at least $1 million or more in total plan assets or with at least 100 eligible employees;
• Non-discretionary and non-retirement accounts of bank trust departments or trust companies, but only if they principally engage in banking or trust activities;
• Investors who were Gateway Predecessor Fund shareholders as of the date of the Reorganization;
• Clients of an adviser or subadviser to any Natixis Fund with investments of $25,000 or more in the Natixis Funds; and
• Clients of Natixis Advisors that invest in a Natixis Fund that does not offer Class Y shares.

In order to receive Class A shares without a front-end sales charge or a CDSC, you must notify the appropriate Fund of your eligibility at the time of purchase.Repurchasing Fund SharesYou may apply proceeds from redeeming Class A shares of a Fund to repurchase Class A shares of any Natixis Fund without paying a front-end sales charge. To qualify, you must reinvest some or all of the proceeds within 120 days after your redemption and notify Natixis Funds in writing (directly or through your financial representative) at the time of reinvestment that you are taking advantage of this privilege. You may reinvest your proceeds by sending a new check for some or all of the redemption amount. Please note: for U.S. federal income tax purposes, a redemption generally is treated as a sale that involves tax consequences, even if the proceeds are later reinvested. Please consult your tax adviser to discuss how a redemption would affect you.Eliminating the CDSCAs long as the Distributor is notified at the time you sell, the CDSC for Class A shares will generally be eliminated in the following cases: (1) to make distributions from a retirement plan (a plan termination or total plan redemption may incur a CDSC); (2) to make payments through a systematic withdrawal plan; or (3) due to shareholder death or disability.Please see the SAI for more information on eliminating or reducing front-end sales charges and CDSC.Class C SharesThe offering price of Class C shares is their NAV without a front-end sales charge. Class C shares are subject to a CDSC of 1.00% on redemptions made within one year of the date of their acquisition. The holding period for determining the CDSC will continue to run after an exchange to Class C shares of another Natixis Fund.

Class C Contingent Deferred Sales Charges
Year Since Purchase	CDSC on Shares Being Sold
1st	1.00%
Thereafter	0.00%

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Fund ServicesEliminating the CDSCAs long as the Distributor is notified at the time you sell, the CDSC for Class C shares will generally be eliminated in the following cases: (1) to make distributions from a retirement plan (a plan termination or total plan redemption may incur a CDSC); (2) to make payments through a systematic withdrawal plan; or (3) due to shareholder death or disability.Please see the SAI for more information on eliminating or reducing front-end sales charges and the CDSC.How the CDSC is Applied to Your SharesThe CDSC is a sales charge you pay when you redeem certain Fund shares. The CDSC:

• Is calculated based on the number of shares you are selling;
• In order to minimize your CDSC, the calculation is based on either your original purchase price or the current NAV of the shares being sold, whichever is lower;
• Is deducted from the proceeds of the redemption unless you request, at the time of the redemption, that it be deducted from the amount remaining in your account; and
• Applies to redemptions made through the one year anniversary date, as applicable.

A CDSC will not be charged on:

• Increases in NAV above the purchase price;
• Shares you acquired by reinvesting your dividends or capital gains distributions; or
• Exchanges. However, the original purchase date of the shares from which the exchange is made determines if the newly acquired shares are subject to the CDSC when they are sold.

To minimize the amount of the CDSC you may pay when you redeem shares, the relevant Fund will first redeem shares acquired through reinvested dividends and capital gain distributions. Shares will be sold in the order in which they were purchased (earliest to latest).Because distribution and service (12b-1) fees are paid out of the Fund’s assets on an ongoing basis, over time these fees will increase the cost of your investment and may cost you more than paying other types of sales charges and service fees.Compensation to Securities DealersAs part of their business strategies, the Funds pay securities dealers and other financial institutions (collectively, “dealers”) that sell their shares. This compensation originates from two sources: sales charges (front-end or deferred) and 12b-1 fees (comprising the annual service and/or distribution fees paid under a plan adopted pursuant to Rule 12b-1 under the 1940 Act). The sales charges, some or all of which may be paid to dealers, are discussed in the section “How Sales Charges Are Calculated” and dealer commissions are disclosed in the SAI. Each class of Fund shares offered in this Prospectus pays an annual service fee of 0.25% of its average daily net assets. Class C shares are subject to an annual distribution fee of 0.75% of their average daily net assets. Generally, the 12b-1 fees are paid to securities dealers on a quarterly basis, but may be paid on other schedules. The SAI includes additional information about the payment of some or all of such fees to dealers. Because these distribution fees and service fees are paid out of the Funds’ assets on an ongoing basis, over time these fees for Class C shares will increase the cost of your investment and may cost you more than paying the front-end sales charge and service fees on Class A shares. In addition, each Fund may make payments to financial intermediaries that provide shareholder services to shareholders whose shares are held of record in omnibus, other group accounts (for example, 401(k) plans) or accounts traded through registered securities clearing agents to compensate those intermediaries for services they provide to such shareholders, including, but not limited to, sub-accounting, sub-transfer agency, similar shareholder or participant recordkeeping, shareholder or participant reporting, or shareholder or participant transaction processing (“recordkeeping and processing-related services”). The actual payments, and the services provided, vary from firm to firm. These fees are paid by each Fund in light of the fact that other costs may be avoided by each Fund where the intermediary, not each Fund’s service provider, provides services to Fund shareholders.The Distributor, the Fund’s adviser and each of their respective affiliates may, out of their own resources, which generally come directly or indirectly from fees paid by the Funds, make payments to certain dealers and other financial intermediaries that satisfy certain criteria established from time to time by the Distributor. Payments may vary based on sales, the amount of assets a dealer’s or intermediary’s clients have invested in the Funds, and other factors. These payments may also take the form of sponsorship of seminars or informational meetings or payments for attendance by persons associated with a dealer or intermediary at informational meetings. The Distributor and its affiliates may also make payments for recordkeeping and processing-related services to financial intermediaries that sell Fund shares. These payments may be in addition to payments made by each Fund for similar services.The payments described in this section, which may be significant to the dealers and the financial intermediaries, may create an incentive for a dealer or financial intermediary or their representatives to recommend or sell shares of a particular fund or share class over other mutual funds or share classes. Additionally, these payments may result in the Funds receiving certain marketing or servicing advantages that are not generally available to mutual funds that do not make such payments, including placement on a sales list, including a preferred or select sales list, or in other sales programs. These payments, which are in addition to any amounts you may pay your dealer or other financial intermediary, may create potential conflicts of interest between an investor and a dealer or other financial intermediary who is recommending a particular mutual fund over other mutual funds. Before investing, you

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Fund Services should consult with your financial representative and review carefully any disclosure by the dealer or other financial intermediary as to what monies it receives from mutual funds and their advisers and distributors, as well as how your financial representative is compensated. Please see the SAI for additional information about payments made by the Distributor and its affiliates to dealers and intermediaries. It’s Easy to Open an AccountTo Open an Account with Natixis Funds:1.   Read this Prospectus carefully. Each Fund is generally available for purchase in the U.S., Puerto Rico, Guam and the U.S. Virgin Islands. Except to the extent otherwise permitted by the Distributor, the Funds will only accept accounts from U.S. citizens with a U.S. address or resident aliens with a U.S. address and a U.S. taxpayer identification number.2.   Determine how much you wish to invest. See the chart showing the investment minimums for various types of accounts in the section “Purchase and Sale of Fund Shares.”

• The Distributor, at its sole discretion, may lower investment minimums for accounts associated with wrap-fee programs sponsored by certain broker-dealers and investment advisers and for accounts associated with certain other defined contribution plans not using the Natixis Funds’ prototype document.
• The Distributor, at its sole discretion, may waive the investment minimums for new accounts being established into existing Corporate Retirement Plans and existing SEP-IRA, SARSEP and Keogh Plans using the Natixis Funds’ prototype document.
• The Fund is not available to new SIMPLE IRAs.
• Class A shares of the Funds are available to Fund trustees, former Fund trustees, employees of affiliates of the Natixis Funds and other individuals who are affiliated with any Natixis Fund (this also applies to any spouse, parents, siblings, grandparents, grandchildren and in-laws of those mentioned) with no initial or subsequent investment minimum.

3.   Complete the appropriate parts of the account application, carefully following the instructions. If you have any questions, please call your financial representative or Natixis Funds at 800-225-5478. For more information on Natixis Funds’ investment programs, refer to the section “Additional Investor Services” in this Prospectus.4.   Use the sections of this Prospectus that follow as your guide for purchasing shares.Minimum Balance Policy In order to address the relatively higher costs of servicing smaller fund positions, on an annual basis each Fund may close an account and send the account holder the proceeds if the account falls below $50 for direct accounts and $500 for networked accounts. The valuation of account balances for this purpose and the liquidation itself generally occur during October of each calendar year, although they may occur at another date in the year.Certain accounts, such as accounts that fall below the minimum as a result of the automatic conversion from Class B to Class A shares, accounts using the Natixis Funds’ prototype document (including IRAs, Keogh plans, 403(b)(7) plans and Coverdell Education Savings Accounts) and accounts associated with wrap fee programs or defined contribution plans, are excepted from the liquidation. However, the Funds reserve the right to liquidate any account with a balance of one share or less regardless of the account type.Self-Servicing Your AccountBuying or selling shares is easy with the services described below:Natixis Funds Personal Access Line^®800-225-5478, press 1Natixis Funds Websitega.natixis.comYou have access to your account 24 hours a day by calling the Personal Access Line^® from a touch-tone telephone or by visiting us online (certain restrictions may apply). Using these customer service options, you may:

• purchase, exchange or redeem shares in your existing accounts (certain restrictions may apply);
• review your account balance, recent transactions, Fund prices and recent performance;
• order duplicate account statements; and
• obtain tax information.

Please see the following pages for other ways to buy, exchange or sell your shares.

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Fund Services Buying SharesExcept to the extent otherwise permitted by the Distributor, the Funds will only accept investments from U.S. citizens with a U.S. address or resident aliens with a U.S. address and a U.S. taxpayer identification number.

	Opening an Account	Adding to an Account
Through Your Investment Dealer	•Call your investment dealer for information about opening or adding to an account. Dealers may also charge you a processing or service fee in connection with the purchase of Fund shares.
By Mail	•Make out a check in U.S. dollars for the investment amount, payable to “Natixis Funds.” Third party checks, “starter” checks and credit card convenience checks will not be accepted. •Mail the check with your completed application to Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, or the overnight address, 330 West 9th Street, Kansas City, MO 64105-1514. •Investments made by check are redeemable although the Fund may withhold payment until the purchase check has cleared. See the section “Selling Restrictions.”	•Make out a check in U.S. dollars for the investment amount, payable to “Natixis Funds.” Third party checks, “starter” checks and credit card convenience checks will not be accepted. •Complete the investment slip from an account statement or include a letter specifying the Fund name, your class of shares, your account number and the registered account name(s). •Investments made by check are redeemable although the Fund may withhold payment until the purchase check has cleared. See the section “Selling Restrictions.”
By Exchange (See the section “Exchanging Shares” for more details.)	•Call your investment dealer or Natixis Funds at 800-225-5478 or visit ga.natixis.com to 1) obtain a current prospectus for the fund into which you are exchanging and 2) request an exchange.	•Call your investment dealer or Natixis Funds at 800-225-5478 or visit ga.natixis.com to request an exchange.
By Wire	•Opening an account by wire is not available.	•Visit ga.natixis.com to add shares to your account by wire. Instruct your bank to transfer funds to State Street Bank & Trust Company, ABA #011000028, and DDA #99011538. •Specify the Fund name, your class of shares, your account number and the registered account name(s). Your bank may charge you for such a transfer.
Through Automated Clearing House (“ACH”)	•Although you cannot open an account through ACH, you may add this feature by selecting it on your account application. •Ask your bank or credit union whether it is a member of the ACH system.	•Call Natixis Funds at 800-225-5478 or visit ga.natixis.com to add shares to your account through ACH. •If you have not signed up for the ACH system, please call Natixis Funds or visit ga.natixis.com for a Service Options Form. A medallion signature guarantee may be required. •Redemption proceeds may not be available immediately upon redemption for shares purchased through ACH. See the section “Selling Restrictions.”
Automatic Investing Through Investment Builder	•Although you cannot open an account through Investment Builder, you may add this feature by selecting it on your account application. •Ask your bank or credit union whether it is a member of the ACH system.	•If you have not signed up for Investment Builder, please call Natixis Funds at 800-225-5478 or visit ga.natixis.com for a Service Options Form. A medallion signature guarantee may be required. •See the section “Additional Investor Services.” •Redemption proceeds may not be available immediately upon redemption for shares purchased through ACH. See the section “Selling Restrictions.”

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Fund ServicesSelling SharesTo Sell Some or All of Your SharesCertain restrictions may apply. Redemption proceeds may not be available immediately upon redemption for shares purchased by check, through ACH or Investment Builder. See the section “Restrictions on Buying, Selling and Exchanging Shares.” Generally, a transaction fee will be charged for expedited payment of redemption proceeds of $5.50 for wire transfers, $50 for international wire transfers or $20.50 for overnight delivery. These fees are subject to change.

Through Your Investment Dealer	•Call your investment dealer for information. Dealers may also charge you a processing or service fee in connection with the redemption of Fund shares.
By Mail	•Write a letter to request a redemption. Specify the name of your Fund, class of shares, account number, the exact registered account name(s), the number of shares or the dollar amount to be redeemed and the method by which you wish to receive your proceeds. Additional materials may be required. See the section “Selling Shares in Writing.” •The request must be signed by all of the owners of the shares and must include the capacity in which they are signing, if appropriate. •Mail your request by regular mail to Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579 or by registered, express or certified mail to Natixis Funds, 330 West 9th Street, Kansas City, MO 64105-1514. •Proceeds (less any applicable CDSC) will be delivered by the method chosen in your letter. Proceeds delivered by mail will generally be mailed to you within three business days after the request is received in good order, although it may take longer. See the sections “Selling Shares in Writing” and “Selling Restrictions.”
By Exchange (See the section “Exchanging Shares” for more details.)	•Obtain a current prospectus for the fund into which you are exchanging by calling your investment dealer or Natixis Funds at 800-225-5478 or visit ga.natixis.com.•Call Natixis Funds or visit ga.natixis.com to request an exchange.
By Wire	•Complete the “Bank Information” section on your account application. •Call Natixis Funds at 800-225-5478, visit ga.natixis.com or indicate in your redemption request letter (see above) that you wish to have your proceeds wired to your bank. •Proceeds (less any applicable CDSC) will generally be wired on the next business day, although it may take longer. See the sections “Selling Shares in Writing” and “Selling Restrictions.” A wire fee will be deducted from the proceeds. Your bank may charge you a fee to receive the wire. If you have not signed up for banking information on your application, please call Natixis Funds at 800-225-5478 or visit ga.natixis.com for a Service Options Form. A medallion signature guarantee may be required.
Through ACH	•Ask your bank or credit union whether it is a member of the ACH system. •Complete the “Bank Information” section on your account application. •If you have not signed up for the ACH system on your application, please call Natixis Funds at 800-225-5478 or visit ga.natixis.com for a Service Options Form. A medallion signature guarantee may be required. •Call Natixis Funds or visit ga.natixis.com to request an ACH redemption or indicate in your redemption letter that you wish to have your proceeds sent to your bank through ACH. •Proceeds (less any applicable CDSC) will generally arrive at your bank within three business days, although it may take longer. See the sections “Selling Shares in Writing” and “Selling Restrictions.”
By Telephone	•Call Natixis Funds at 800-225-5478 to choose the method you wish to use to redeem your shares. You may receive your proceeds (less any applicable CDSC) by mail, by wire or through ACH (see above), subject to certain restrictions. See the sections “Selling Shares in Writing” and “Selling Restrictions.”
By Systematic Withdrawal Plan (See the section “Additional Investor Services” for more details.)	•Call Natixis Funds at 800-225-5478 or your financial representative for more information.• Because withdrawal payments may have tax consequences, you should consult your tax adviser before establishing such a plan. See the sections “Selling Shares in Writing” and “Selling Restrictions.”

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Fund ServicesSelling Shares in Writing If you wish to redeem your shares in writing, all owners of the shares must sign the redemption request in the exact names in which the shares are registered and indicate any special capacity in which they are signing. In certain situations, you will be required to make your request to sell shares in writing. In these instances, a letter of instruction signed by the authorized owner is necessary. In certain situations, we also may require a medallion signature guarantee or additional documentation.A medallion signature guarantee protects you against fraudulent orders and is necessary if:

• your address of record or bank account information has been changed within the past 30 days;
• you are selling more than $100,000 worth of shares and you are requesting the proceeds by check (this does not apply to IRA transfer of assets to a new custodian);
• a proceeds check for any amount is either mailed to an address other than the address of record or not payable to the registered owner(s); or
• the proceeds are sent by check, wire or in some circumstances ACH to a bank account whose owner(s) do not match the owner(s) of the fund account.

A notary public cannot provide a medallion signature guarantee. The Funds will only accept medallion signature guarantees bearing the STAMP2000 Medallion imprint. A medallion signature guarantee can be obtained from one of the following sources:

• a financial representative or securities dealer;
• a federal savings bank, cooperative or other type of bank;
• a savings and loan or other thrift institution;
• a credit union; or
• a securities exchange or clearing agency.

In some situations additional documentation may be necessary. Please contact your financial representative or Natixis Funds regarding documentation requirements.Exchanging SharesIn general, you may exchange shares of each Fund for shares of the same class of another Natixis Fund or Loomis Sayles Fund that offers such class of shares, without paying a sales charge or a CDSC (see the sections “Buying Shares” and “Selling Shares”) subject to certain restrictions noted below. The exchange must be for at least the minimum to open an account (or the total NAV of your account, whichever is less), or, once the fund minimum is met, exchanges under the Automatic Exchange Plan must be made for at least $100 (see the section “Additional Investor Services”). In addition, shareholders who were shareholders of the Gateway Predecessor Fund as of the date of the Reorganization and (1) whose account value is $100,000 or more or (2) whose account otherwise meets the eligibility requirements for Class Y may exchange their Class A shares for Class Y shares of the Fund. Such an exchange of Class A for Class Y shares of the Fund by a former shareholder of the Gateway Predecessor Fund generally should not be a taxable event for U.S. federal income tax purposes. All exchanges are subject to the eligibility requirements of the fund into which you are exchanging and any other limits on sales of or exchanges into that fund. The exchange privilege may be exercised only in those states where shares of such funds may be legally sold. For U.S. federal income tax purposes, an exchange of Fund shares for shares of another fund is generally treated as a sale on which gain or loss may be recognized. Subject to the applicable rules of the SEC, the Board of Trustees reserves the right to modify the exchange privilege at any time. Before requesting an exchange into any other fund, please read its prospectus carefully. You may be unable to hold your shares through the same financial intermediary if you engage in certain share exchanges. You should contact your financial intermediary for further details. Please refer to the SAI for more detailed information on exchanging Fund shares.Accounts participating in or moving into wrap-fee programs or held through a registered investment adviser may exchange Class A shares of a fund for Class Y shares of the same fund and may also exchange Class C shares of a fund for Class A shares or Class Y shares of the same fund. Any account with an outstanding CDSC liability will be assessed the CDSC before converting to either Class A or Class Y shares. Accounts converting from Class C shares to Class A shares will not be subject to any Class A sales charges as a result of the initial conversion or any subsequent purchases of Class A shares. In order to exchange shares, a representative of the wrap-fee program or registered investment adviser must follow the procedures set forth by the Distributor. An exchange of shares for shares of a different class in the same fund generally should not be a taxable event for the exchanging shareholder.Class A shares of a fund acquired by Fund trustees, former Fund trustees, employees of affiliates of the Natixis Funds, individuals who are affiliated with any Natixis Fund (including spouses, parents, siblings, grandparents, grandchildren and in-laws of those mentioned) and Natixis and Natixis affiliate benefit plans (collectively, “Natixis affiliated shareholders”) may be exchanged for Class Y shares of the same fund without payment of a CDSC.Due to operational limitations at your financial intermediary, your ability to exchange between shares classes of the same fund may be limited. Please consult your financial representative for more information.

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Fund Services Restrictions on Buying, Selling and Exchanging SharesThe Funds discourage excessive short-term trading that may be detrimental to the Funds and their shareholders. Frequent purchases and redemptions of Fund shares by shareholders may present certain risks for other shareholders in a Fund. This includes the risk of diluting the value of Fund shares held by long-term shareholders, interfering with the efficient management of each Fund’s portfolio and increasing brokerage and administrative costs. Funds investing in securities that require special valuation processes (such as foreign securities, high yield securities or small cap securities), also may have increased exposure to these risks. The Board of Trustees has adopted the following policies to address and discourage such trading.Each Fund reserves the right to suspend or change the terms of purchasing or exchanging shares. Each Fund and the Distributor reserve the right to reject any purchase or exchange order for any reason, including if the transaction is deemed not to be in the best interests of the Fund’s other shareholders or possibly disruptive to the management of the Fund. A shareholder whose exchange order has been rejected may still redeem its shares by submitting a redemption request as described under “Selling Shares.”Limits on Frequent Trading. Without limiting the right of each Fund and the Distributor to reject any purchase or exchange order, each Fund and the Distributor may (but are not obligated to) restrict purchases and exchanges for the accounts of “market timers.” An account may be deemed to be one of a market timer if it makes two “round trips” in any Fund over a 90-day interval, as determined by the Fund. A “round trip” is a purchase (including a purchase by exchange) into a Fund followed by a redemption (including a redemption by exchange) of any amount out of the same Fund. The above limits are applicable whether you hold shares directly with a Fund or indirectly through a financial intermediary, such as a broker, bank, investment adviser, recordkeeper for retirement plan participants, or other third party. The preceding is not an exclusive description of activities that the Funds and the Distributor may consider to be “market timing.”Notwithstanding the above, certain financial intermediaries, such as retirement plan administrators, may monitor and restrict the frequency of purchase and redemption transactions in a manner different from that described above. The policies of these intermediaries may be more or less restrictive than the generally applicable policies described above. Each Fund may choose to rely on a financial intermediary’s restrictions on frequent trading in place of the Fund’s own restrictions if the Fund determines, at its discretion, that the financial intermediary’s restrictions provide reasonable protection for the Fund from excessive short-term trading activity. Please contact your financial representative for additional information regarding their policies for limiting the frequent trading of Fund shares.This policy also does not apply with respect to shares purchased by certain funds-of-funds or similar asset allocation programs that rebalance their investments only infrequently. To be eligible for this exemption, the fund-of-funds or asset allocation program must identify itself to and receive prior written approval from a Fund or the Distributor. A Fund and Distributor may request additional information to enable them to determine that the fund-of-funds or asset allocation program is not designed to and/or is not serving as a vehicle for disruptive short-term trading, which may include requests for (i) written assurances from the sponsor or investment manager of the fund-of-funds or asset allocation program that it enforces the Fund’s frequent trading policy on investors or another policy reasonably designed to deter disruptive short-term trading in Fund shares, and/or (ii) data regarding transactions by investors in the fund-of-funds or asset allocation program, for periods and on a frequency determined by the Fund and Distributor, so that the Fund can monitor compliance by such investors with the trading limitations of the Fund or of the fund-of-funds or asset allocation program.Trade Activity Monitoring. Trading activity is monitored selectively on a daily basis in an effort to detect excessive short-term trading activities. If a Fund or the Distributor believes that a shareholder or financial intermediary has engaged in market timing or other excessive short-term trading activity, it may, at its discretion, request that the shareholder or financial intermediary stop such activities or refuse to process purchases or exchanges in the accounts. At its discretion, a Fund or the Distributor may restrict or prohibit transactions by such identified shareholders or intermediaries. In making such judgments, a Fund and the Distributor seek to act in a manner that they believe is consistent with the best interests of all shareholders. A Fund and the Distributor also reserve the right to notify financial intermediaries of the shareholder’s trading activity.Accounts Held by Financial Intermediaries. The ability of a Fund and the Distributor to monitor trades that are placed by omnibus or other nominee accounts is more limited in those instances in which the financial intermediary maintains the record of a Fund’s underlying beneficial owners. In general, each Fund and the Distributor will review trading activity at the omnibus account level. If a Fund and the Distributor detect suspicious activity, they may request and receive personal identifying information and transaction histories for some or all underlying shareholders (including plan participants) to determine whether such shareholders have engaged in market timing or other excessive short-term trading activity. If a Fund believes that a shareholder has engaged in market timing or other excessive short-term trading activity in violation of the Fund’s policies through an omnibus account, the Fund will attempt to limit transactions by the underlying shareholder which engaged in such trading, although it may be unable to do so. A Fund may also limit or prohibit additional purchases of Fund shares by an intermediary. Investors should not assume a Fund will be able to detect or prevent all market timing or other trading practices that may disadvantage a Fund. Purchase RestrictionsEach Fund is required by federal regulations to obtain certain personal information from you and to use that information to verify your identity. The Funds may not be able to open your account if the requested information is not provided. Each Fund reserves the right to refuse to open an account, close an account and redeem your shares at the then-current price or take other such steps that the Fund deems necessary to comply with federal regulations if your identity cannot be verified.

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Fund Services Selling RestrictionsThe table below describes restrictions placed on selling shares of a Fund. Please see the SAI for additional information regarding redemption payment policies:

Restriction	Situation
Each Fund may suspend the right of redemption or postpone payment for more than 7 days:	•When the New York Stock Exchange (the “NYSE”) is closed (other than a weekend/holiday) as permitted by the SEC. •During an emergency as permitted by the SEC. •During any other period permitted by the SEC.
Each Fund reserves the right to suspend account services or refuse transaction requests:	•With a notice of a dispute between registered owners or death of a registered owner. •With suspicion/evidence of a fraudulent act.
Each Fund may pay the redemption price in whole or in part by a distribution in kind of readily marketable securities in lieu of cash or may take up to 7 days to pay a redemption request in order to raise capital:	•When it is detrimental for a Fund to make cash payments as determined in the sole discretion of the adviser or subadviser.
Each Fund may withhold redemption proceeds for 10 days from the purchase date:	•When redemptions are made within 10 calendar days of purchase by check or ACH to allow the check or ACH transaction to clear.

Although most redemptions are made in cash, as described in the SAI, the Fund reserves the right to redeem shares in kind. If a shareholder receives a distribution in kind, the shareholder will bear the market risk associated with the distributed securities and may incur brokerage or other charges in converting the securities to cash.How Fund Shares Are Priced“Net asset value” is the price of one share of a Fund without a sales charge, and is calculated each business day using this formula:

Net Asset Value = Total market value of securities + Cash and other assets – Liabilities
Number of outstanding shares

The NAV of Fund shares is determined pursuant to policies and procedures approved by the Board of Trustees, as summarized below:

• A share’s NAV is determined at the close of regular trading on the NYSE on the days the NYSE is open for trading. This is normally 4:00 p.m., Eastern time. The Fund’s shares will not be priced on the days on which the NYSE is closed for trading. In addition, the Fund’s shares will not be priced on the holidays listed in the SAI. See the section “Net Asset Value” in the SAI for more details.
• The price you pay for purchasing, redeeming or exchanging a share will be based upon the NAV next calculated (plus or minus applicable sales charges as described earlier in the Fund Summary) after your order is received by the transfer agent “in good order.”¹
• Requests received by the Funds after the NYSE closes will be processed based upon the NAV determined at the close of regular trading on the next day that the NYSE is open. If the transfer agent receives the order in good order prior to market close (normally 4:00 p.m., Eastern time), the shareholder will receive that day’s NAV. Under limited circumstances, the Distributor may enter into contractual agreements pursuant to which orders received by your investment dealer before the Fund determines its NAV and transmitted to the transfer agent prior to market open on the next business day are processed at the NAV determined on the day the order was received by your investment dealer. Please contact your investment dealer to determine whether it has entered into such a contractual agreement. If your investment dealer has not entered into such a contractual agreement, your order will be processed at the NAV next determined after your investment dealer submits the order to the Fund.
• If a Fund invests in foreign securities, it may have NAV changes on days when you cannot buy or sell its shares.

1 Please see the section “Buying Shares,” which provides additional information regarding who can receive a purchase order.

Generally, during times of substantial economic or market change, it may be difficult to place your order by phone. During these times, you may deliver your order in person to the Distributor or send your order by mail as described in the sections “Buying Shares” and “Selling Shares.”

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Fund Services Generally, Fund securities are valued as follows:

• Equity securities—last sale price on the exchange or market where primarily traded or, if there is no reported sale during the day, the closing bid price.
• Debt securities (other than short-term obligations)—based upon evaluated prices furnished to a Fund by an independent pricing service, which service determines valuations for normal, institutional-size trading units of such securities using market information, transactions for comparable securities and various relationships between securities which are generally recognized by institutional traders.
• Short-term obligations (purchased with an original or remaining maturity of 60 days or less)—amortized cost (which approximates market value).
• Securities traded on foreign exchanges—market price on the foreign exchange, unless the Fund believes that an occurrence after the close of that exchange will materially affect the security’s value. In that case, the security may be fair-valued at the time the Fund determines its NAV by or pursuant to procedures approved by the Board of Trustees. When fair-valuing their securities, the Funds may, among other things, use modeling tools or other processes that may take into account factors such as securities market activity and/or significant events that occur after the close of the local market and before the time a Fund’s NAV is calculated.
• Swaps—market value based on prices supplied by a pricing service, if available, or quotations obtained from broker-dealers.
• Options—domestic exchange-traded single equity option contracts are valued at the mean of the National Best Bid and Offer quotations. Options on futures contracts are valued using the current settlement price. Other exchange-traded options are valued at the average of the closing bid and asked quotations. OTC options contracts are valued based on quotations obtained from broker-dealers. Under normal market conditions, the Funds will generally consider the value of domestic exchange-traded index options determined at the close of trading on the Chicago Board Options Exchange (the “CBOE”) (normally 4:15 p.m., Eastern time) to be the value at the close of the NYSE (normally 4:00 p.m., Eastern time). However, if under the Funds’ valuation procedures a significant change in the value of the S&P 500 contracts is considered to have occurred between the close of the NYSE and the close of the CBOE, the Funds will consider the closing price on the CBOE to not reflect the value of the index options at the close of the NYSE. In such circumstances the index options will be fair valued by or pursuant to procedures approved by the Board of Trustees. On the last business day of the month, the Gateway Fund will fair value index options using the closing rotation values published by the CBOE.
• Futures—unrealized gain or loss on the contract using current settlement price. When a settlement price is not used, futures contracts will be valued at their fair value as determined by or pursuant to procedures approved by the Fund’s Board of Trustees.
• Forward foreign currency contracts—interpolated prices determined based on information provided by an independent pricing service.
• All other securities—fair market value as determined by the adviser or subadviser pursuant to procedures approved by the Board of Trustees.

As described above, if market prices are not readily available for a security, securities may not be priced on the basis of quotations from the primary market in which they are traded but rather may be priced by another method that the Board of Trustees believes is more likely to result in a price that reflects fair value (which is the amount that a Fund might reasonably expect to receive from a current sale of the security in the ordinary course of business). A Fund may also value securities at fair value or estimate their values pursuant to procedures approved by the Board of Trustees in other circumstances such as when extraordinary events occur after the close of the relevant market but prior to the close of the NYSE. This may include situations relating to a single issuer (such as a declaration of bankruptcy or a delisting of the issuer’s security from the primary market on which it has traded) as well as events affecting the securities markets in general (such as market disruptions or closings and significant fluctuations in U.S. and/or foreign markets). Fair value pricing may require subjective determinations about the value of a security, and fair values used to determine the Fund’s NAV may differ from quoted or published prices, or from prices that are used by others, for the same securities. In addition, the use of fair value pricing may not always result in adjustments to the prices of securities held by the Fund. Dividends and DistributionsThe Funds generally distribute annually all or substantially all of their net investment income (other than capital gains) in the form of dividends. The following table shows when each Fund expects to distribute dividends. The Funds expect to distribute all or substantially all of their net realized long- and short-term capital gains annually, after applying any available capital loss carryovers. To the extent permitted by law, the Board of Trustees may adopt a different schedule for making distributions as long as payments are made at least annually.

Dividend Payment Schedule
Annually	Quarterly
ASG Diversifying Strategies Fund	Loomis Sayles Absolute Strategies Fund
ASG Global Alternatives Fund	Gateway Fund
ASG Managed Futures Strategy Fund
Loomis Sayles Multi-Asset Real Return Fund

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Fund ServicesDistributions will automatically be reinvested in shares of the same class of the distributing Fund at NAV, unless you select one of the following alternatives:

• Participate in the Dividend Diversification Program, which allows you to have all dividends and distributions automatically invested at NAV in shares of the same class of another Natixis Fund registered in your name. Certain investment minimums and restrictions may apply. For more information about this program, see the section “Additional Investor Services.”
  
• Receive distributions from dividends and interest in cash while reinvesting distributions from capital gains in additional shares of the same class of a Fund, or in the same class of another Natixis Fund.
• Receive all distributions in cash.

If a dividend or capital gain distribution check remains uncashed for six months or is undeliverable by the United States Postal Service and your account is still open, the Fund will reinvest the dividend or distribution in additional shares of the Fund promptly after making this determination and the check will be canceled. In addition, future dividends and capital gains distributions will be automatically reinvested in additional shares of the Fund unless you subsequently contact the Fund and request to receive distributions by check.For more information or to change your distribution option, contact Natixis Funds in writing or call 800-225-5478.If you earn more than $10 annually in taxable income from a Natixis Fund held in a non-retirement plan account, you will receive a Form 1099 to help you report the prior calendar year’s distributions on your federal income tax return. This information will also be reported to the Internal Revenue Service (“IRS”). Be sure to keep this Form 1099 as a permanent record. A fee may be charged for any duplicate information requested. Tax ConsequencesExcept where noted, the discussion below addresses only the U.S. federal income tax consequences of an investment in the Funds and does not address any foreign, state or local tax consequences.Each Fund intends to meet all requirements under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”), necessary to qualify each year for treatment as a “regulated investment company” and thus does not expect to pay any federal income tax on income and capital gains that are timely distributed to shareholders.Taxation of Distributions from the Funds. For federal income tax purposes, distributions of investment income are generally taxable to Fund shareholders as ordinary income. Taxes on distributions of capital gains are determined by how long a Fund owned the investments that generated them, rather than how long a shareholder has owned his or her shares. Distributions attributable to the excess of net long-term capital gains from the sale of investments a Fund owned for more than one year over net short-term capital losses and that are properly reported by the Fund as capital gain dividends (“Capital Gain Dividends”) will generally be taxable to a shareholder receiving such distributions as long-term capital gain. Distributions attributable to the excess of net short-term capital gains from the sale of investments that a Fund owned for one year or less over net long-term capital losses will be taxable as ordinary income.For taxable years beginning before January 1, 2013, distributions of investment income properly reported by a Fund as derived from “qualified dividend income” will be taxed in the hands of individuals at the rates applicable to long-term capital gain, provided holding period and other requirements are met at both the shareholder and Fund levels. Income generated by investments in fixed-income securities, derivatives and REITs generally is not eligible for treatment as qualified dividend income.For taxable years beginning before January 1, 2013, long-term capital gain rates applicable to individuals have been reduced, in general to 15%, with a 0% rate applying to taxpayers in the 10% and 15% rate brackets. It is currently unclear whether Congress will extend these long-term capital gain rates and the special treatment of qualified dividend income for taxable years beginning on or after January 1, 2013.Fund distributions are taxable whether shareholders receive them in cash or in additional shares. In addition, Fund distributions are taxable to shareholders even if they are paid from income or gains earned by a Fund before a shareholder’s investment (and thus were included in the price the shareholder paid for his or her shares). Such distributions may occur in respect of shares purchased at a time when a Fund’s NAV reflects gains that are either unrealized or realized but not distributed.Dividends and distributions declared by a Fund in October, November or December of one year and paid in January of the next taxable year generally are taxable in the year in which the distributions are declared, rather than the year in which the distributions are received.Dividends derived from interest on securities issued by the U.S. government or its agencies or instrumentalities, if any, may be exempt from state and local income taxes. Each Fund will advise shareholders annually of the proportion of its dividends that are derived from such interest.Distributions by a Fund to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax laws generally will not be taxable, although distributions by retirement plans to their participants may be taxable. Special tax rules apply to investments through such retirement plans. If your investment is through such a plan, you should consult your tax adviser to determine the suitability of the Funds as an investment through your plan and the tax treatment of distributions to you (including distributions of amounts attributable to an investment in a Fund) from the plan.

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Fund Services Redemption, Sale or Exchange of Fund Shares. A redemption, sale or exchange of Fund shares (including an exchange of Fund shares for shares of another Natixis Fund or Loomis Sayles Fund) is a taxable event and will generally result in recognition of gain or loss. Gain or loss, if any, recognized by a shareholder on a redemption, sale, exchange or other disposition of Fund shares will generally be taxed as long-term capital gain or loss if the shareholder held the shares for more than one year, and as short-term capital gain or loss if the shareholder held the shares for one year or less, assuming in each case that the shareholder held the shares as capital assets. Short-term capital gains are generally taxed at the rates applicable to ordinary income. Any loss realized upon a disposition of shares held for six months or less will be treated as long-term, rather than short-term, capital loss to the extent of any Capital Gain Dividends received by the shareholder with respect to the shares. The deductibility of capital losses is subject to limitations. Taxation of Certain Fund Investments. A Fund’s investments in foreign securities may be subject to foreign withholding or other taxes. In that case, the Fund’s yield on those securities would be decreased. Each Fund generally does not expect that its shareholders will be entitled to claim a credit or deduction with respect to foreign taxes incurred by the Fund. In addition, a Fund’s investments in foreign securities or foreign currencies may be subject to special tax rules that have the effect of increasing or accelerating the Fund’s recognition of ordinary income and may affect the timing or amount of the Fund’s distributions to shareholders.A Fund’s investments in certain debt obligations, derivatives or REITs may cause the Fund to recognize taxable income in excess of the cash generated by such investments. Thus, a Fund could be required to liquidate investments, including at times when it is not advantageous to do so, in order to satisfy the distribution requirements applicable to regulated investment companies under the Code.A Fund’s ability to invest directly in commodities and commodities-related investments is limited by the requirement that at least 90 percent of a regulated investment company’s income must consist of certain types of “qualifying income.” Accordingly, each of ASG Diversifying Strategies Fund, ASG Global Alternatives Fund, ASG Managed Futures Strategy Fund and Loomis Sayles Multi-Asset Real Return Fund has invested, and intends to continue to invest, in a wholly-owned Cayman Islands subsidiary that will in turn make such investments. Each of these Funds has obtained a private letter ruling from the IRS to the effect that income of its subsidiary that is attributed to the Fund will be qualifying income.Backup Withholding. Each Fund is required in certain circumstances to apply backup withholding on taxable dividends, redemption proceeds and certain other payments that are paid to any shareholder if the shareholder does not furnish to the Fund certain information and certifications or the shareholder is otherwise subject to backup withholding. The backup withholding tax rate is 28% for amounts paid on or before December 31, 2012 and will be 31% for amounts paid after December 31, 2012.Please see the SAI for additional information on the U.S. federal income tax consequences of investing in the Funds. You should consult your tax adviser for more information on your own situation, including possible federal, state, local, foreign or other applicable taxes.Additional Investor ServicesRetirement PlansNatixis Funds offer a range of retirement plans, including Coverdell Education Savings Accounts, IRAs, SEPs and other pension and profit sharing plans. Refer to the section “It’s Easy to Open an Account” for investment minimums. For more information about our Retirement Plans, call us at 800-225-5478.Investment Builder ProgramThis is Natixis Funds’ automatic investment plan. Once you meet the Fund minimum, you may authorize automatic monthly transfers of $50 or more per Fund from your bank checking or savings account to purchase shares of one or more Natixis Funds. For instructions on how to join the Investment Builder Program, please refer to the section “Buying Shares.”Dividend Diversification ProgramThis program allows you to have all dividends and any other distributions automatically invested in shares of the same class of another Natixis Fund subject to the eligibility requirements of that other fund and to state securities law requirements. Shares will be purchased at the selected fund’s NAV without a front-end sales charge or CDSC on the ex dividend date. Before establishing a Dividend Diversification Program into any other Natixis Fund, please read its prospectus carefully.Automatic Exchange PlanNatixis Funds have an automatic exchange plan under which shares of a class of a Natixis Fund are automatically exchanged each month for shares of the same class of another Natixis Fund. There is no fee for exchanges made under this plan, but there may be a sales charge in certain circumstances. Please see the section “Exchanging Shares” above and refer to the SAI for more information on the Automatic Exchange Plan.Systematic Withdrawal PlanThis plan allows you to redeem shares and receive payments from a Fund on a regular schedule. Redemptions of shares that are part of the Systematic Withdrawal Plan are not subject to a CDSC. However, the amount or percentage you specify in the plan may not exceed, on an annualized basis, 10% of the value of your Fund account based upon the value of your Fund account on the day you establish your plan. For information on establishing a Systematic Withdrawal Plan, please refer to the section “Selling Shares.”

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Fund Services Natixis Funds Personal Access Line^®This automated customer service system allows you to have access to your account 24 hours a day by calling 800-225-5478, and pressing 1. With a touch-tone telephone, you can obtain information about your current account balance, recent transactions, Fund prices and recent performance. You may also use Personal Access Line^® to purchase, exchange or redeem shares in any of your existing accounts. Certain restrictions may apply.Natixis Funds WebsiteVisit us at ga.natixis.com to review your account balance and recent transactions, to view daily prices and performance information or to order duplicate account statements and tax information. You may also go online to purchase, exchange or redeem shares in your existing accounts. Certain restrictions may apply.Financial Performance The financial highlights tables are intended to help you understand each Fund’s financial performance for the period of each Fund’s operations. Certain information reflects financial results for a single Fund share. The total returns in the table represent the return that an investor would have earned (or lost) on an investment in the Fund (assuming reinvestment of all dividends and distributions). The financial information shown for periods prior to February 15, 2008 for Class A shares of the Gateway Fund is that of the Gateway Predecessor Fund, which reorganized into the Gateway Fund in February 2008. The information shown below for periods prior to January 1, 2008 was audited by another independent registered public accounting firm whose report dated February 11, 2008 expressed an unqualified opinion on that information. The information shown for periods after December 31, 2007 has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, whose report, along with each Fund’s financial statements, is included in each Fund’s annual report to shareholders. The annual reports are incorporated by reference into the SAI, both of which are available free of charge upon request from the Distributor.

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Financial Performance For a share outstanding throughout each period.

		Income (Loss) from Investment Operations:			Less Distributions:						Ratios to Average Net Assets:
	Net asset value, beginning of the period	Net investment loss(a)	Net realized and unrealized gain	Total from investment operations	Dividends from net investment income	Distributions from net realized capital gains	Total distributions	Net asset value, end of the period	Total return(%)(b)(c)	Net assets, end of the period (000’s)	Net expenses, excluding interest expense (%)(d)(e)	Gross expenses, excluding interest expense (%)(e)	Net expenses, including interest expense (%)(d)(e)	Gross expenses, including interest expense (%)(e)	Net investment loss (%)(e)	Portfolio turnover rate(%)(f)
ASG DIVERSIFYING STRATEGIES FUND
Class A
12/31/2010	$10.19	$(0.16)	$1.02(g)	$0.86	$(0.15)	$(0.45)	$(0.60)	$10.45	8.46	$61,411	1.70	2.02	1.74	2.05	(1.45)	—
12/31/2009(h)	10.00	(0.07)	0.80	0.73	(0.10)	(0.44)	(0.54)	10.19	7.26	2,887	1.70	4.87	1.71	4.88	(1.48)	—
Class C
12/31/2010	10.16	(0.24)	1.01(g)	0.77	(0.14)	(0.45)	(0.59)	10.34	7.58	20,742	2.45	2.68	2.49	2.72	(2.20)	—
12/31/2009(h)	10.00	(0.10)	0.79	0.69	(0.09)	(0.44)	(0.53)	10.16	6.90	131	2.45	5.75	2.47	5.76	(2.23)	—

(a)	Per share net investment loss has been calculated using the average shares outstanding during the period.
(b)	A sales charge for Class A shares and a contingent deferred sales charge for Class C shares are not reflected in total return calculations. Periods less than one year, if applicable, are not annualized.
(c)	Had certain expenses not been waived/reimbursed during the period, if applicable, total returns would have been lower.
(d)	The investment adviser agreed to waive its fees and/or reimburse a portion of the Fund’s expenses during the period. Without this waiver/reimbursement, if applicable, expenses would have been higher.
(e)	Computed on an annualized basis for periods less than one year, if applicable.
(f)	Due to the short-term nature of the portfolio of investments there is no portfolio turnover calculation.
(g)	The amount shown for a share outstanding does not correspond with the aggregate realized and unrealized gain on investments for the period due to the timing of sales and redemptions of fund shares in relation to fluctuating market values of investments of the Fund.
(h)	For the period August 3, 2009 (inception) through December 31, 2009.

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Financial Performance For a share outstanding throughout each period.

		Income (Loss) from Investment Operations:			Less Distributions:						Ratios to Average Net Assets:
	Net asset value, beginning of the period	Net investment income (loss) (a)	Net realized and unrealized gain (loss)	Total from investment operations	Dividends from net investment income(b)	Distributions from net realized capital gains	Total distributions	Net asset value, end of the period	Total return(%)(c)(d)	Net assets, end of the period (000’s)	Net expenses, excluding interest expense (%)(e)(f)	Gross expenses, excluding interest expense (%)(f)	Net expenses, including interest expense (%)(e)(f)	Gross expenses, including interest expense (%)(f)	Net investment income (loss) (%)(f)	Portfolio turnover rate(%)(g)
ASG GLOBAL ALTERNATIVES FUND
Class A
12/31/2010	$10.39	$(0.14)	$0.86	$0.72	$(0.00)	$(0.44)	$(0.44)	$10.67	6.94	$204,313	1.60	1.66	1.61	1.67	(1.28)	—
12/31/2009	9.69	(0.14)	1.01	0.87	(0.12)	(0.05)	(0.17)	10.39	8.95	82,160	1.60	1.92	1.61	1.92	(1.33)	—
12/31/2008(h)	10.00	0.03	(0.30)	(0.27)	(0.04)	—	(0.04)	9.69	(2.73)	6	1.60	61.52	1.62	61.54	1.36	—
Class C
12/31/2010	10.33	(0.21)	0.85	0.64	(0.00)	(0.44)	(0.44)	10.53	6.21	66,832	2.35	2.42	2.36	2.42	(2.03)	—
12/31/2009	9.70	(0.22)	1.01	0.79	(0.11)	(0.05)	(0.16)	10.33	8.09	22,367	2.35	2.64	2.36	2.65	(2.08)	—
12/31/2008(h)	10.00	0.02	(0.31)	(0.29)	(0.01)	—	(0.01)	9.70	(2.88)	1	2.35	62.35	2.39	62.38	0.62	—

(a)	Per share net investment income (loss) has been calculated using the average shares outstanding during the period.
(b)	Amount rounds to less than $0.01 per share, if applicable.
(c)	A sales charge for Class A shares and a contingent deferred sales charge for Class C shares are not reflected in total return calculations. Periods less than one year, if applicable, are not annualized.
(d)	Had certain expenses not been waived/reimbursed during the period, if applicable, total returns would have been lower.
(e)	The investment adviser agreed to waive its fees and/or reimburse a portion of the Fund’s expenses during the period. Without this waiver/reimbursement, if applicable, expenses would have been higher.
(f)	Computed on an annualized basis for periods less than one year, if applicable.
(g)	Due to the short-term nature of the portfolio of investments there is no portfolio turnover calculation.
(h)	For the period September 30, 2008 (inception) through December 31, 2008.

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Financial Performance For a share outstanding throughout each period.

		Income (Loss) from Investment Operations:			Less Distributions:						Ratios to Average Net Assets:
	Net asset value, beginning of the period	Net investment loss (a)	Net realized and unrealized gain	Total from investment operations	Dividends from net investment income	Distributions from net realized capital gains	Total distributions	Net asset value, end of the period	Total return(%)(b)(c)	Net assets, end of the period (000’s)	Net expenses, excluding interest expense (%)(d)(e)	Gross expenses, excluding interest expense (%)(e)	Net expenses, including interest expense (%)(d)(e)	Gross expenses, including interest expense (%)(e)	Net investment loss (%)(e)	Portfolio turnover rate(%)(f)
ASG MANAGED FUTURES STRATEGY FUND
Class A
12/31/2010(g)	$10.00	$(0.07)	$1.41	$1.34	$(0.33)	$(0.40)	$(0.73)	$10.61	13.44	$6,511	1.70	2.75	1.73	2.78	(1.43)	—
Class C
12/31/2010(g)	10.00	(0.10)	1.40	1.30	(0.32)	(0.40)	(0.72)	10.58	13.04	2,357	2.45	3.29	2.47	3.31	(2.17)	—

(a)	Per share net investment loss has been calculated using the average shares outstanding during the period.
(b)	A sales charge for Class A shares and a contingent deferred sales charge for Class C shares are not reflected in total return calculations. Periods less than one year, if applicable, are not annualized.
(c)	Had certain expenses not been waived/reimbursed during the period, if applicable, total returns would have been lower.
(d)	The investment adviser agreed to waive its fees and/or reimburse a portion of the Fund’s expenses during the period. Without this waiver/reimbursement, if applicable, expenses would have been higher.
(e)	Computed on an annualized basis for periods less than one year, if applicable.
(f)	Due to the short-term nature of the portfolio of investments there is no portfolio turnover calculation.
(g)	For the period July 30, 2010 (inception) through December 31, 2010.

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Financial Performance For a share outstanding throughout each period.

		Income (Loss) from Investment Operations:			Less Distributions:						Ratios to Average Net Assets:
	Net asset value, beginning of the period	Net investment income(a)	Net realized and unrealized gain (loss)	Total from investment operations	Dividends from net investment income	Distributions from net realized capital gains	Total distributions	Net asset value, end of the period	Total return(%)(b)(c)	Net assets, end of the period (000’s)	Net expenses(%)(d)(e)	Gross expenses(%)(d)	Net investment income (%)(d)	Portfolio turnover rate(%)
GATEWAY FUND
Class A*
12/31/2010	$25.25	$0.40	$0.81	$1.21	$(0.40)	$—	$(0.40)	$26.06	4.83	$2,403,629	0.94	1.05	1.59	7
12/31/2009	24.17	0.49	1.06	1.55	(0.47)	—	(0.47)	25.25	6.57	2,784,865	0.94	1.05	2.05	11
12/31/2008	28.64	0.55	(4.49)	(3.94)	(0.53)	—	(0.53)	24.17	(13.92)	3,142,574	0.94	1.03	2.05	38
12/31/2007	27.04	0.53	1.61	2.14	(0.54)	—	(0.54)	28.64	7.94	4,278,699	0.94	0.94	1.91	5
12/31/2006	25.00	0.48	2.04	2.52	(0.48)	—	(0.48)	27.04	10.14	3,329,940	0.95	0.95	1.92	9
Class C
12/31/2010	25.18	0.21	0.80	1.01	(0.21)	—	(0.21)	25.98	4.03	273,779	1.70	1.80	0.84	7
12/31/2009	24.11	0.30	1.07	1.37	(0.30)	—	(0.30)	25.18	5.78	238,997	1.70	1.80	1.24	11
12/31/2008**	27.76	0.35	(3.57)	(3.22)	(0.43)	—	(0.43)	24.11	(11.74)	173,869	1.70	1.83	1.57	38

*	As of the close of business on February 15, 2008, the Fund acquired the assets and liabilities of the Gateway Predecessor Fund, a series of The Gateway Trust, an Ohio business trust, in exchange for Class A shares of the Fund pursuant to a plan of reorganization approved by the Gateway Predecessor Fund shareholders on January 18, 2008 (the “Acquisition”). Prior to the Acquisition, the Fund had no investment operations. The Fund is the successor to the Gateway Predecessor Fund and therefore information for the periods prior to and including February 15, 2008 relates to the Gateway Predecessor Fund.
**	From commencement of Class operations on February 19, 2008 through December 31, 2008.
(a)	Per share net investment income has been calculated using the average shares outstanding during the period.
(b)	Had certain expenses not been waived/reimbursed during the period, if applicable, total returns would have been lower.
(c)	A sales charge for Class A shares and a contingent deferred sales charge for Class C shares are not reflected in total return calculations. Periods less than one year, if applicable, are not annualized.
(d)	Computed on an annualized basis for periods less than one year, if applicable.
(e)	The investment adviser and/or administrator agreed to waive its fees and/or reimburse a portion of the Fund’s expenses during the period. Without this waiver/reimbursement, if applicable, expenses would have been higher.

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Financial Performance For a share outstanding throughout each period.

		Income from Investment Operations:			Less Distributions:						Ratios to Average Net Assets:
	Net asset value, beginning of the period	Net investment income(a)(b)	Net realized and unrealized gain	Total from investment operations	Dividends from net investment income(b)	Distributions from net realized capital gains	Total distributions(b)	Net asset value, end of the period	Total return (%)(c)(d)	Net assets, end of the period (000’s)	Net expenses (%)(e)(f)	Gross expenses (%)(f)	Net investment income (%)(f)	Portfolio turnover rate(%)
LOOMIS SAYLES ABSOLUTE STRATEGIES FUND
Class A
12/31/2010(g)	$10.00	$0.00	$0.06	$0.06	$(0.00)	$—	$(0.00)	$10.06	0.41	$2,465	1.30	6.98	0.86	39
Class C
12/31/2010(g)	10.00	0.00	0.05	0.05	(0.00)	—	(0.00)	10.05	0.31	563	2.05	8.68	0.24	39

(a)	Per share net investment income has been calculated using the average shares outstanding during the period.
(b)	Amount rounds to less than $0.01 per share, if applicable.
(c)	A sales charge for Class A shares and a contingent deferred sales charge for Class C shares are not reflected in total return calculations. Periods less than one year, if applicable, are not annualized.
(d)	Had certain expenses not been waived/reimbursed during the period, if applicable, total returns would have been lower.
(e)	The investment adviser agreed to waive its fees and/or reimburse a portion of the Fund’s expenses during the period. Without this waiver/reimbursement, if applicable, expenses would have been higher.
(f)	Computed on an annualized basis for periods less than one year, if applicable.
(g)	For the period December 15, 2010 (inception) through December 31, 2010.

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Financial Performance For a share outstanding throughout each period.

		Income from Investment Operations:			Less Distributions:						Ratios to Average Net Assets:
	Net asset value, beginning of the period	Net investment income(a)	Net realized and unrealized gain	Total from investment operations	Dividends from net investment income	Distributions from net realized capital gains	Total distributions	Net asset value, end of the period	Total return(%)(b)(c)	Net assets, end of the period (000’s)	Net expenses (%)(d)(e)	Gross expenses (%)(e)	Net investment income (%)(e)	Portfolio turnover rate(%)
LOOMIS SAYLES MULTI-ASSET REAL RETURN FUND
Class A
12/31/2010(f)	$10.00	$0.07	$0.14	$0.21	$(0.08)	$—	$(0.08)	$10.13	2.10	$1,139	1.35	2.91	2.82	139
Class C
12/31/2010(f)	10.00	0.05	0.14	0.19	(0.08)	—	(0.08)	10.11	1.88	12	2.10	3.90	1.86	139

(a)	Per share net investment income has been calculated using the average shares outstanding during the period.
(b)	A sales charge for Class A shares and a contingent deferred sales charge for Class C shares are not reflected in total return calculations. Periods less than one year, if applicable, are not annualized.
(c)	Had certain expenses not been waived/reimbursed during the period, if applicable, total returns would have been lower.
(d)	The investment adviser agreed to waive its fees and/or reimburse a portion of the Fund’s expenses during the period. Without this waiver/reimbursement, if applicable, expenses would have been higher.
(e)	Computed on an annualized basis for periods less than one year, if applicable.
(f)	For the period September 30, 2010 (inception) through December 31, 2010.

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Glossary of TermsAdjusted notional value — The adjusted notional value of a derivative is the notional value of that derivative as multiplied by a ratio that reflects how a change in the value of a derivative moves in relation to a change in the value of the underlying reference asset and, as such, may more accurately measure a Fund’s real economic exposure to that derivative. Bottom-up approach — The analysis of potential performance of individual stocks before considering the impact of economic trends. Such companies may be identified from research reports, stock screens or personal knowledge of the products and services. Credit default swaps — Credit derivative contracts between two counterparties, in which a “buyer” of protection makes periodic payments to a “seller” in return for seller’s obligation to make a payment to buyer in the case of default of an underlying credit instrument or instruments. Credit default swaps may be used to provide protection with respect to individual securities or baskets of securities. Derivative — A financial instrument whose value and performance are based on the value and performance of another security, asset, index or financial instrument. Diversification — The strategy of investing in a wide range of companies or securities representing different market sectors to reduce the risk if an individual company or one sector suffers losses. Equity Securities — Securities that may include common stocks, preferred stocks, warrants, securities convertible into common and preferred stocks and other equity-like interests in an entity.Inflation — A general increase in prices coinciding with a fall in the real value of money, as measured by the Consumer Price Index. Interest rate — Rate of interest charged for the use of money, usually expressed at an annual rate. Market capitalization — Market price multiplied by number of shares outstanding. Whether a company is considered a “large,” “medium” or “small” capitalization company for a fund will depend upon the company’s market capitalization at the time of measurement and the index being used and/or the guidelines used by the portfolio manager.Maturity — The final date on which the payment of a debt instrument (e.g., bonds, notes, repurchase agreements) becomes due and payable. Short-term bonds generally have maturities of up to 5 years; intermediate-term bonds between 5 and 15 years; and long-term bonds over 15 years. Net assets — A fund’s assets minus its liabilities. With respect to funds that have a policy to invest 80% of their net assets in particular kinds of securities, “net assets” as used in such policies means net assets plus borrowings made for investment purposes. Net asset value (NAV) per share — The market value of one share of a fund on any given day without taking into account any front-end sales charge or contingent deferred sales charge. It is determined by dividing a fund’s total net assets by the number of shares outstanding. Notional value — Notional value is the nominal or face amount used to calculate payments on the derivative products that are held by a fund. The notional value of the securities underlying a derivative often differs from the derivative’s market value. Rule 144A securities — Rule 144A securities are privately offered securities that can be resold only to certain qualified institutional buyers. Rule 144A securities are treated as illiquid, unless a manager has determined, under guidelines established by a fund’s trustees, that a particular issue of Rule 144A securities is liquid. Structured notes — Structured notes are debt obligations whose principal and/or interest payments are determined by reference to changes in some external factor or factors, such as an interest rate or a commodities or securities index.Swap agreements — Swap agreements are unregulated, individually negotiated contracts between two parties who agree to exchange for a specified period of time two streams of payments that would be earned or realized on particular notional investments or instruments. In a credit default swap, one party agrees to make periodic payments to a counterparty, in exchange for the right to receive a payment in the event of default of the underlying reference security.Volatility — The general variability of a fund’s value resulting from price fluctuations of its investments. Yield — The rate at which a fund earns income, expressed as a percentage. Mutual fund yield calculations are standardized, based upon a formula developed by the SEC.

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Intentionally Left Blank If you would like more information about the Funds, the following documents are available free upon request:Annual and Semiannual Reports—Provide additional information about each Fund’s investments. Each report includes a discussion of the market conditions and investment strategies that significantly affected the Fund’s performance during its last fiscal year.Statement of Additional Information (SAI)—Provides more detailed information about the Funds and their investment limitations and policies. The SAI has been filed with the SEC and is incorporated into this Prospectus by reference.For a free copy of the Funds’ annual or semiannual report or their SAI, to request other information about the Funds, and to make shareholder inquiries generally, contact your financial representative, visit the Funds’ website at ga.natixis.com or call the Funds at 800-225-5478.Important Notice Regarding Delivery of Shareholder Documents:In our continuing effort to reduce your fund’s expenses and the amount of mail that you receive from us, we will combine mailings of prospectuses, annual or semiannual reports and proxy statements to your household. If more than one family member in your household owns the same fund or funds described in a single prospectus, report or proxy statement, you will receive one mailing unless you request otherwise. Additional copies of our prospectuses, reports or proxy statements may be obtained at any time by calling 800-225-5478. If you are currently receiving multiple mailings to your household and would like to receive only one mailing or if you wish to receive separate mailings for each member of your household in the future, please call us at the telephone number listed above and we will resume separate mailings within 30 days of your request.Your financial representative or Natixis Funds will also be happy to answer your questions or to provide any additional information that you may require.Information about the Funds, including its reports and SAI, can be reviewed and copied at the Public Reference Room of the SEC in Washington, D.C. Text-only copies of the Funds’ reports and SAI are available free from the EDGAR Database on the SEC’s Internet site at: www.sec.gov. Copies of this information may also be obtained, after paying a duplicating fee, by electronic request at the following e-mail address: publicinfo@sec.gov, or by writing the SEC’s Public Reference Section, Washington, D.C. 20549-1520.Information on the operation of the Public Reference Room may be obtained by calling the SEC at 1-202-551-8090.Portfolio Holdings—A description of the Funds’ policies and procedures with respect to the disclosure of each Fund’s portfolio securities is available in the SAI.

Investment Company Act File No. 811-00242
Investment Company Act File No. 811-22099
XA51-0511

ProspectusMay 1, 2011(as revised May 16, 2011)

	Class Y
ASG Diversifying Strategies Fund	DSFYX
ASG Global Alternatives Fund	GAFYX
ASG Managed Futures Strategy Fund	ASFYX
Gateway Fund	GTEYX
Loomis Sayles Absolute Strategies Fund	LASYX
Loomis Sayles Multi-Asset Real Return Fund	MARYX

The Securities and Exchange Commission has not approved or disapproved any Fund’s shares or determined whether this prospectus is truthful or complete. Any representation to the contrary is a crime.

Table of Contents

Fund Summary	1
ASG Diversifying Strategies Fund	1
ASG Global Alternatives Fund	7
ASG Managed Futures Strategy Fund	13
Gateway Fund	18
Loomis Sayles Absolute Strategies Fund	22
Loomis Sayles Multi-Asset Real Return Fund	27
Investment Goals, Strategies and Risks	33
More Information About the Funds	33
ASG Diversifying Strategies Fund	33
ASG Global Alternatives Fund	38
ASG Managed Futures Strategy Fund	43
Gateway Fund	48
Loomis Sayles Absolute Strategies Fund	51
Loomis Sayles Multi-Asset Real Return Fund	56
Management Team	62
Meet the Funds’ Investment Advisers and Subadviser	62
Meet the Funds’ Portfolio Managers	63
Fund Services	65
Compensation to Securities Dealers	65
It’s Easy to Open an Account	65
Buying Shares	67
Selling Shares	68
Selling Shares in Writing	69
Exchanging Shares	69
Restrictions on Buying, Selling and Exchanging Shares	70
How Fund Shares Are Priced	71
Dividends and Distributions	72
Tax Consequences	73
Financial Performance	74
Glossary of Terms	81
Fund shares are not bank deposits and are not guaranteed, endorsed or insured by the Federal Deposit Insurance Corporation or any other government agency, and are subject to investment risks, including possible loss of the principal invested.

Fund Summary

ASG Diversifying Strategies Fund

Investment GoalThe Fund pursues an absolute return strategy that seeks to provide capital appreciation. The secondary goal of the Fund is to achieve these returns while maintaining a low or negative correlation over time with the returns of major equity indices.Fund Fees & Expenses The following tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees(fees paid directly from your investment)	Class Y
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	None
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, as applicable)	None
Redemption fees	None

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)	Class Y
Management fees	1.25%
Other expenses (restated to reflect current expenses)	0.55%
Total annual fund operating expenses	1.80%
Fee waiver and/or expense reimbursement1	0.31%
Total annual fund operating expenses after fee waiver and/or expense reimbursement	1.49%

ExampleThis example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first year and on the Total Annual Fund Operating Expenses for the remaining years. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	Class Y
1 year	$152
3 years	$536
5 years	$946
10 years	$2,090

1 AlphaSimplex Group, LLC (the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.45% of the Fund’s average daily net assets for Class Y shares, exclusive of organizational expenses, brokerage expenses, interest expense, taxes and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 1.45% of the Fund’s average daily net assets for Class Y shares. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

Portfolio TurnoverThe Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. Due to the short-term nature of the Fund’s investment portfolio, the Fund does not calculate a portfolio turnover rate. The Fund’s trading in derivatives is active and frequent. Active and frequent trading of derivatives, like active and frequent trading of securities, will result in transaction costs which reduce fund returns.

1

Fund Summary Investments, Risks and PerformancePrincipal Investment Strategies The Fund seeks to generate positive absolute returns over time rather than track the performance of any particular index. In selecting investments for the Fund, the Adviser uses multiple quantitative investment models and strategies each of which has an absolute return objective. Each model and strategy may involve a broad range of market exposures. These models may include, for example, models that base investment decisions on fixed income spreads and models which seek to identify trends across various asset classes. The Adviser uses quantitative and qualitative judgments in the determination of weighting among the models and strategies. Although the Fund seeks positive absolute returns over time, it is likely that the Fund’s investment returns may be volatile over short periods of time. The Fund may outperform the overall securities market during periods of flat or negative market performance and may underperform during periods of strong market performance. There can be no assurance that the Fund’s returns over time or during any period will be positive or that the Fund will outperform the overall security markets over time or during any particular period.Under normal market conditions, the Adviser typically will make extensive use of a variety of derivative instruments, in particular futures and forward contracts, to capture the exposures suggested by its absolute return strategies while also adding value through volatility management and correlation management. These market exposures, which are expected to change over time, may include, for example, exposures to the returns of equity and fixed income securities, currencies and commodities. The Adviser will scale the notional exposure of the Fund’s futures and currency forward positions with the objective of targeting a relatively stable level of annualized volatility for the Fund’s overall portfolio. The Adviser may also use exchange-traded futures contracts on broad U.S. or international equity indices to decrease any undesired correlation with the returns of the major equity indices. The Adviser will have great flexibility to allocate the Fund’s derivatives exposure among various securities, indices, currencies, commodities and other instruments, and the amount of the Fund’s assets that may be allocated to derivative strategies and among these various instruments is expected to vary over time.Under normal market conditions, it is expected that no more than 25% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to the Fund’s derivative transactions. The notional value of the Fund’s derivative investments, however, will generally exceed 25% of the Fund’s total assets. The Fund expects that under normal market conditions it will invest at least 75% of its total assets in money market and other short-term, high quality securities (the “Money Market Portion”) managed by Reich & Tang Asset Management, LLC (the “Subadviser”), although the Fund may invest less than this percentage. The assets allocated to the Money Market Portion will be used primarily to support the Fund’s investments in derivatives and similar instruments and, secondarily, to provide the Fund with incremental income and liquidity. Although the Fund will invest a significant portion of its assets in money market instruments, the Fund is not a “money market” fund and the value of the Money Market Portion as well as the value of the Fund’s shares may decrease.Although the Fund does not intend to invest in physical commodities directly, the Fund expects to obtain investment exposure to commodity-related derivatives through a wholly-owned subsidiary organized under the laws of the Cayman Islands that will make commodity-related investments (the “Commodity Subsidiary”). Under normal market conditions, no more than 10% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to these transactions.The Fund will concentrate its investments in the financial services industry, which means it will normally invest at least 25% of its total assets in securities and other obligations (for example, bank certificates of deposit) of issuers in such industry.The Fund may engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance.The percentage limitations set forth in this Fund summary are not investment restrictions and the Fund may exceed these limits from time to time.Principal RisksThe principal risks of investing in the Fund are summarized below. The Fund does not represent a complete investment program. You may lose money by investing in the Fund.Allocation and Correlation Risk: This is the risk that the Adviser’s judgments about, and allocations between, asset classes and market exposures may adversely affect the Fund’s performance. This risk can be increased by the use of derivatives to increase allocations to various market exposures. This is because derivatives can create investment leverage, which will magnify the impact to the Fund of its investment in any underperforming market exposure.Commodity Risk: This is the risk that exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of physical commodities or commodity-linked derivative instruments may be affected by changes in overall market movements, commodity price volatility, changes in interest rates, currency fluctuations, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in

2

Fund Summary commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund.
Commodity Subsidiary Risk: Investing in the Commodity Subsidiary will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments, such as commodity investments risk. The Commodity Subsidiary is not registered under the Investment Company Act of 1940 (the “1940 Act”) and is not subject to all of the investor protections of the 1940 Act. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its shareholders.Concentrated Investment Risk: The Fund is particularly vulnerable to events affecting companies in the financial services industry because the Fund concentrates its investments in securities and other obligations of issuers in such industry. Examples of risks affecting the financial services industry include changes in governmental regulation, issues relating to the availability and cost of capital, changes in interest rates and/or monetary policy and price competition. In addition, financial services companies are often more highly leveraged than other companies, making them inherently riskier. As a result, the Fund’s shares may rise and fall in value more rapidly and to a greater extent than shares of a fund that does not concentrate or focus in a particular industry or economic sector. The financial services industry has recently experienced high volatility and a number of issuer failures and the value of many of these securities has significantly declined. As a result, the risk associated with investing in the Fund may be increased as compared to a fund that does not concentrate in the financial services industry.Credit/Counterparty Risk: Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with over-the-counter (“OTC”) derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.Currency Risk: Fluctuations in the exchange rates between the different currencies may negatively affect an investment. The Fund may hedge its exposure to foreign currencies and may invest in foreign currencies as an asset class.Derivatives Risk: Derivatives are subject to changes in the value of the underlying asset or indices on which such transactions are based. There is no guarantee that the use of derivatives will be effective or that suitable transactions will be available. Even a small investment in derivatives may give rise to leverage risk and can have a significant impact on the Fund’s exposure to securities markets values, interest rates or currency exchange rates. It is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. The use of derivatives for other than hedging purposes may be considered a speculative activity, and involves greater risks than are involved in hedging. The Fund’s use of derivatives, such as futures, forward contracts, foreign currency transactions and commodity-linked derivatives involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward contracts and other OTC derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices, liquidity risk, allocation risk and the risk of losing more than the initial margin required to initiate derivatives positions. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. There can be no assurance that the Fund’s derivative counterparties will not experience financial difficulties, possibly resulting in losses to the Fund.Equity Securities Risk: The value of the Fund’s investments in equity securities could be subject to unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock.Foreign Securities Risk: The Fund’s investments in foreign securities are subject to foreign currency fluctuations. Foreign securities may be subject to higher volatility than U.S. securities, varying degrees of regulation and limited liquidity. Investments in foreign securities may be subject to greater political, economic, environmental, credit and information risks.Interest Rate Risk: Changes in interest rates may cause the value of the Fund’s investments to decrease. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment.Issuer Risk: The value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.

3

Fund Summary Leverage Risk: This is the risk associated with securities or practices (e.g., borrowing and the use of certain derivatives) and investment in certain types of derivatives that multiply small index or market movements into larger changes in value. Use of derivative instruments may involve leverage. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. Futures and forward currency contracts are derivatives and may be subject to this type of risk.Liquidity Risk: Liquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Illiquid investments also may be difficult to value.Management Risk: A strategy used by the Fund’s portfolio managers may fail to produce the intended result. The Adviser utilizes various proprietary quantitative models to identify investment opportunities. There is a possibility that one or all of the quantitative models may fail to identify profitable opportunities at any time. Furthermore, they may incorrectly identify opportunities and these misidentified opportunities may lead to substantial losses.Market Risk: The market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions. The Fund’s portfolio managers will attempt to reduce this risk by implementing various volatility management strategies and techniques. However, there is no guarantee that such strategies and techniques will produce the intended result.U.S. Government Securities Risk: Investments in certain U.S. government securities may not be supported by the full faith and credit of the U.S. government. Accordingly, no assurance can be given that the U.S. government will provide financial support to U.S. government agencies, instrumentalities or sponsored enterprises if it is not obligated to do so by law. The maximum potential liability of the issuers of some U.S. government securities held by the Fund may greatly exceed their current resources, and it is possible that these issuers will not have the funds to meet their payment obligations in the future. In such a case, the Fund would have to look principally to the agency, instrumentality or sponsored enterprise issuing or guaranteeing the security for ultimate repayment, and the Fund may not be able to assert a claim against the U.S. government itself in the event the agency, instrumentality or sponsored enterprise does not meet its commitment. Concerns about the capacity of the U.S. government to meet its obligations may raise the interest rates payable on its securities, negatively impacting the price of such securities already held by the Fund.Valuation Risk: This is the risk that the Fund has valued certain securities at a higher price than the price at which they can be sold. This risk may be especially pronounced for investments, such as derivatives, which may be illiquid or which may become illiquid.Risk/Return Bar Chart and TableThe bar chart and table shown below provide some indication of the risks of investing in the Fund by showing the Fund’s performance in the first full year and by showing how the Fund’s average annual returns for the one-year and life-of-fund compare with those of a broad measure of market performance. The Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information is available online at ga.natixis.com and/or by calling the Fund toll-free at 800-225-5478.Total Returns for Class Y

	Highest Quarterly Return: Third Quarter 2010, 13.97%
	Lowest Quarterly Return: Fourth Quarter 2010, -4.19%

4

Fund Summary

Average Annual Total Returns (for the periods ended December 31, 2010)	Past 1 Year	Life of Fund (8/3/09)
ASG Diversifying Strategies Fund Class Y – Return Before Taxes	8.63%	11.47%
Return After Taxes on Distributions	6.84%	9.03%
Return After Taxes on Distributions & Sales of Fund Shares	5.91%	8.54%
HFRI Fund of Funds Composite Index (Calculated from August 1, 2009)	5.46%	7.00%

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans, qualified plans, education savings accounts, such as 529 plans, or individual retirement accounts. Index performance reflects no deduction for fees, expenses or taxes.ManagementInvestment Adviser AlphaSimplex Group, LLCInvestment SubadviserReich & Tang Asset Management, LLCPortfolio ManagersAndrew W. Lo, Chief Investment Strategist of the Adviser, has served as co-portfolio manager of the Fund since August 2009.Jeremiah H. Chafkin, President of the Adviser, has served as co-portfolio manager of the Fund since August 2009.Philippe P. Lüdi, Vice President of the Adviser, has served as co-portfolio manager of the Fund since May 2010.Robert S. Rickard, Senior Vice President and head of Portfolio Management and Trading of the Subadviser, has served as co-portfolio manager of the Fund since August 2009.Purchase and Sale of Fund SharesClass Y shares of the Fund may be purchased by the following entities at the following investment minimums.A minimum initial investment of $100,000 and the minimum subsequent investment of $100 for:

• Other mutual funds, endowments, foundations, bank trust departments or trust companies.

There is no initial or subsequent investment minimum for:

• Wrap Fee Programs of certain broker-dealers, the advisers or Natixis Distributors, L.P. (the “Distributor”). Such wrap fee programs may be subject to additional or different conditions, including a wrap account fee. Each broker-dealer is responsible for transmitting to its customer a schedule of fees and other information regarding any such conditions.
• Retirement Plans such as 401(a), 401(k) or 457 plans.
• Certain Individual Retirement Accounts if the amounts invested represent rollover distributions from investments by any of the retirement plans invested in the Fund as set forth above.
• Registered Investment Advisers investing on behalf of clients in exchange for an advisory, management or consulting fee.
• Fund Trustees, former Fund trustees, employees of affiliates of the Natixis Funds and other individuals who are affiliated with any Natixis Fund (this also applies to any spouse, parents, children, siblings, grandparents, grandchildren and in-laws of those mentioned) and Natixis affiliate employee benefit plans.
  

Due to operational limitations at your financial intermediary, certain wrap fee programs, retirement plans, individual retirement accounts and accounts of registered investment advisers may be subject to the investment minimums described above. Please consult your financial representative for more information.At the discretion of Natixis Asset Management Advisors, L.P. (“Natixis Advisors”), clients of Natixis Advisors and its affiliates may purchase Class Y shares of the Fund below the stated minimums.

5

Fund Summary The Fund’s shares are available for purchase (and are redeemable on any business day) through your investment dealer, directly from the Fund by writing to the Fund at Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, by exchange, by wire, by internet at ga.natixis.com, through the Automated Clearing House system, or, in the case of redemptions, by telephone at 800-225-5478 or by the Systematic Withdrawal Plan.Tax InformationFund distributions are generally taxable to you as ordinary income or capital gain, except for distributions to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax law generally.Payments to Broker-Dealers and Other Financial IntermediariesIf you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of the Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

6

Fund Summary

ASG Global Alternatives Fund

Investment GoalThe Fund pursues an absolute return strategy that seeks to provide capital appreciation consistent with the risk-return characteristics of a diversified portfolio of hedge funds. The secondary goal of the Fund is to achieve these returns with less volatility than major equity indices.Fund Fees & Expenses The following tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees(fees paid directly from your investment)	Class Y
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	None
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, as applicable)	None
Redemption fees	None

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)	Class Y
Management fees	1.15%
Other expenses	0.27%
Total annual fund operating expenses	1.42%
Fee waiver and/or expense reimbursement1	0.06%
Total annual fund operating expenses after fee waiver and/or expense reimbursement	1.36%

ExampleThis example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first year and on the Total Annual Fund Operating Expenses for the remaining years. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	Class Y
1 year	$138
3 years	$443
5 years	$771
10 years	$1,697

1 AlphaSimplex Group, LLC (the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.35% of the Fund’s average daily net assets for Class Y shares, exclusive of organizational expenses, brokerage expenses, interest expense, taxes and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 1.35% of the Fund’s average daily net assets for Class Y shares. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

Portfolio TurnoverThe Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. Due to the short-term nature of the Fund’s investment portfolio, the Fund does not calculate a portfolio turnover rate. The Fund’s trading in derivatives is active and frequent. Active and frequent trading of derivatives, like active and frequent trading of securities, will result in transaction costs which reduce fund returns.

7

Fund Summary Investments, Risks and PerformancePrincipal Investment StrategiesThe Fund seeks to achieve long and short exposure to global equity, bond, currency and commodity markets through a wide range of derivative instruments and direct investments. Under normal market conditions, the Adviser typically will make extensive use of derivative instruments, in particular futures and forward contracts on global equity and fixed income securities, securities indices (including both broad- and narrow-based securities indices), currencies, commodities and other instruments. These investments are intended to provide the Fund with risk and return characteristics similar to those of a diversified portfolio of hedge funds.The Fund seeks to generate absolute returns over time rather than track the performance of any particular index of hedge fund returns. In selecting investments for the Fund, the Adviser uses quantitative models to estimate the market exposures that drive the aggregate returns of a diverse set of hedge funds. These market exposures may include, for example, exposures to the returns of stocks, fixed income securities (including U.S. and non-U.S. government securities), currencies and commodities. The Adviser will have great flexibility to allocate the Fund’s derivatives exposure among various securities, indices, currencies, commodities and other instruments, and the amount of the Fund’s assets that may be allocated to derivative strategies and among these various instruments is expected to vary over time. The Fund will not invest directly in hedge funds.Under normal market conditions, it is expected that no more than 25% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to the Fund’s derivative transactions. The notional value of the Fund’s derivative investments, however, will generally exceed 25% of the Fund’s assets. The Fund expects that under normal market conditions it will invest at least 75% of its total assets in money market and other short-term, high quality securities (the “Money Market Portion”) managed by Reich & Tang Asset Management, LLC (the “Subadviser”), although the Fund may invest less than this percentage. The assets allocated to the Money Market Portion will be used primarily to finance the Fund’s investments in derivatives and similar instruments and, secondarily, to provide the Fund with incremental income and liquidity. Although the Fund will invest a significant portion of its assets in money market instruments, the Fund is not a “money market” fund and the value of the Money Market Portion as well as the value of the Fund’s shares may decrease.Although the Fund does not intend to invest in physical commodities directly, the Fund expects to obtain investment exposure to commodity-related derivatives through a wholly-owned subsidiary organized under the laws of the Cayman Islands that will make commodity-related investments (the “Commodity Subsidiary”). Under normal market conditions, no more than 10% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to these transactions.The Fund will concentrate its investments in the financial services industry, which means it will normally invest at least 25% of its total assets in securities and other obligations (for example, bank certificates of deposit) of issuers in such industry.The Fund may engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance.The percentage limitations set forth in this Fund summary are not investment restrictions and the Fund may exceed these limits from time to time.Principal RisksThe principal risks of investing in the Fund are summarized below. The Fund does not represent a complete investment program. You may lose money by investing in the Fund.Commodity Risk: This is the risk that exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of physical commodities or commodity-linked derivative instruments may be affected by changes in overall market movements, commodity price volatility, changes in interest rates, currency fluctuations, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund.
Commodity Subsidiary Risk: Investing in the Commodity Subsidiary will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments, such as commodity investments risk. The Commodity Subsidiary is not registered under the Investment Company Act of 1940 (the “1940 Act”) and is not subject to all of the investor protections of the 1940 Act. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its shareholders.

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Fund Summary Concentrated Investment Risk: The Fund is particularly vulnerable to events affecting companies in the financial services industry because the Fund concentrates its investments in securities and other obligations of issuers in such industry. Examples of risks affecting the financial services industry include changes in governmental regulation, issues relating to the availability and cost of capital, changes in interest rates and/or monetary policy and price competition. In addition, financial services companies are often more highly leveraged than other companies, making them inherently riskier. As a result, the Fund’s shares may rise and fall in value more rapidly and to a greater extent than shares of a fund that does not concentrate or focus in a particular industry or economic sector. The financial services industry has recently experienced high volatility and a number of issuer failures and the value of many of these securities has significantly declined. As a result, the risk associated with investing in the Fund may be increased as compared to a fund that does not concentrate in the financial services industry.Credit/Counterparty Risk: Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.Currency Risk: Fluctuations in the exchange rates between the different currencies may negatively affect an investment. The Fund may hedge its exposure to foreign currencies and may invest in foreign currencies as an asset class.Derivatives Risk: Derivatives are subject to changes in the value of the underlying asset or indices on which such transactions are based. There is no guarantee that the use of derivatives will be effective or that suitable transactions will be available. Even a small investment in derivatives may give rise to leverage risk and can have a significant impact on the Fund’s exposure to securities markets values, interest rates or currency exchange rates. It is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. The use of derivatives for other than hedging purposes may be considered a speculative activity, and involves greater risks than are involved in hedging. The Fund’s use of derivatives, such as futures, forward contracts, foreign currency transactions and commodity-linked derivatives involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward contracts and other OTC derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices, liquidity risk, allocation risk and the risk of losing more than the initial margin required to initiate derivatives positions. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. There can be no assurance that the Fund’s derivative counterparties will not experience financial difficulties, possibly resulting in losses to the Fund.Equity Securities Risk: The value of the Fund’s investments in equity securities could be subject to unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock.Foreign Securities Risk: The Fund’s investments in foreign securities are subject to foreign currency fluctuations. Foreign securities may be subject to higher volatility than U.S. securities, varying degrees of regulation and limited liquidity. Investments in foreign securities may be subject to greater political, economic, environmental, credit and information risks.Hedge Fund Risk: Hedge funds are typically unregulated private investment pools available only to sophisticated investors. They are often illiquid and highly leveraged. Although the Fund will not invest directly in hedge funds, because the Fund’s investments are intended to provide exposure to the factors that drive hedge fund returns, an investment in the Fund will be subject to many of the same risks associated with an investment in a diversified portfolio of hedge funds. Therefore, the Fund’s performance may be lower than the returns of the broader stock market and the Fund’s net asset value may fluctuate substantially over time.Index/Tracking Error Risk: Although the Fund does not seek to track any particular index, the Fund seeks to analyze the factors that drive hedge fund returns, as determined by reference to one or more indices. These indices may not provide an accurate representation of hedge fund returns generally, and the Adviser’s strategy may not successfully identify or be able to replicate factors that drive returns. There is a risk that hedge fund return data provided by third party hedge fund index providers may be inaccurate or may not accurately reflect hedge fund returns due to survivorship bias, self-reporting bias or other biases.Interest Rate Risk: Changes in interest rates may cause the value of the Fund’s investments to decrease. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment.

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Fund Summary Issuer Risk: The value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.Leverage Risk: This is the risk associated with securities or practices (e.g., borrowing and the use of certain derivatives) and investment in certain types of derivatives that multiply small index or market movements into larger changes in value. Use of derivative instruments may involve leverage. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. Futures and forward currency contracts are derivatives and may be subject to this type of risk.Liquidity Risk: Liquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Illiquid investments also may be difficult to value.Management Risk: A strategy used by the Fund’s portfolio managers may fail to produce the intended result. The Adviser utilizes various proprietary quantitative models to identify investment opportunities. There is a possibility that one or all of the quantitative models may fail to identify profitable opportunities at any time. Furthermore, they may incorrectly identify opportunities and these misidentified opportunities may lead to substantial losses.Market Risk: The market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions. The Fund’s portfolio managers will attempt to reduce this risk by implementing various volatility management strategies and techniques. However, there is no guarantee that such strategies and techniques will produce the intended result.U.S. Government Securities Risk: Investments in certain U.S. government securities may not be supported by the full faith and credit of the U.S. government. Accordingly, no assurance can be given that the U.S. government will provide financial support to U.S. government agencies, instrumentalities or sponsored enterprises if it is not obligated to do so by law. The maximum potential liability of the issuers of some U.S. government securities held by the Fund may greatly exceed their current resources, and it is possible that these issuers will not have the funds to meet their payment obligations in the future. In such a case, the Fund would have to look principally to the agency, instrumentality or sponsored enterprise issuing or guaranteeing the security for ultimate repayment, and the Fund may not be able to assert a claim against the U.S. government itself in the event the agency, instrumentality or sponsored enterprise does not meet its commitment. Concerns about the capacity of the U.S. government to meet its obligations may raise the interest rates payable on its securities, negatively impacting the price of such securities already held by the Fund.Valuation Risk: This is the risk that the Fund has valued certain securities at a higher price than the price at which they can be sold. This risk may be especially pronounced for investments, such as derivatives, which may be illiquid or which may become illiquid.Risk/Return Bar Chart and TableThe bar chart and table shown below provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year-to-year and by showing how the Fund’s average annual returns for the one-year and life-of-fund periods compare with those of a broad measure of market performance. The Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information is available online at ga.natixis.com and/or by calling the Fund toll-free at 800-225-5478.Total Returns for Class Y

	Highest Quarterly Return: Third Quarter 2010, 7.23%
	Lowest Quarterly Return: Second Quarter 2010, -4.09%

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Fund Summary

Average Annual Total Returns (for the periods ended December 31, 2010)	Past 1 Year	Life of Fund (9/30/08)
ASG Global Alternatives Fund Class Y – Return Before Taxes	7.22%	5.97%
Return After Taxes on Distributions	6.12%	5.17%
Return After Taxes on Distributions & Sales of Fund Shares	5.08%	4.71%
HFRI Fund of Funds Composite Index (Calculated from October 1, 2008)	5.46%	2.51%

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans, qualified plans, education savings accounts, such as 529 plans, or individual retirement accounts. Index performance reflects no deduction for fees, expenses or taxes.ManagementInvestment Adviser AlphaSimplex Group, LLCInvestment SubadviserReich & Tang Asset Management, LLCPortfolio ManagersAndrew W. Lo, Chief Investment Strategist of the Adviser, has served as co-portfolio manager of the Fund since September 2008.Jeremiah H. Chafkin, President of the Adviser, has served as co-portfolio manager of the Fund since September 2008.Peter A. Lee, Research Scientist for hedge fund beta replication of the Adviser, has served as co-portfolio manager of the Fund since May 2010.Robert S. Rickard, Senior Vice President and head of Portfolio Management and Trading of the Subadviser, has served as co-portfolio manager of the Fund since September 2008.Purchase and Sale of Fund SharesClass Y shares of the Fund may be purchased by the following entities at the following investment minimums.A minimum initial investment of $100,000 and the minimum subsequent investment of $100 for:

• Other mutual funds, endowments, foundations, bank trust departments or trust companies.

There is no initial or subsequent investment minimum for:

• Wrap Fee Programs of certain broker-dealers, the advisers or Natixis Distributors, L.P. (the “Distributor”). Such wrap fee programs may be subject to additional or different conditions, including a wrap account fee. Each broker-dealer is responsible for transmitting to its customer a schedule of fees and other information regarding any such conditions.
• Retirement Plans such as 401(a), 401(k) or 457 plans.
• Certain Individual Retirement Accounts if the amounts invested represent rollover distributions from investments by any of the retirement plans invested in the Fund as set forth above.
• Registered Investment Advisers investing on behalf of clients in exchange for an advisory, management or consulting fee.
• Fund Trustees, former Fund trustees, employees of affiliates of the Natixis Funds and other individuals who are affiliated with any Natixis Fund (this also applies to any spouse, parents, children, siblings, grandparents, grandchildren and in-laws of those mentioned) and Natixis affiliate employee benefit plans.
  

Due to operational limitations at your financial intermediary, certain wrap fee programs, retirement plans, individual retirement accounts and accounts of registered investment advisers may be subject to the investment minimums described above. Please consult your financial representative for more information.At the discretion of Natixis Asset Management Advisors, L.P. (“Natixis Advisors”), clients of Natixis Advisors and its affiliates may purchase Class Y shares of the Fund below the stated minimums.

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Fund Summary The Fund’s shares are available for purchase (and are redeemable on any business day) through your investment dealer, directly from the Fund by writing to the Fund at Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, by exchange, by wire, by internet at ga.natixis.com, through the Automated Clearing House system, or, in the case of redemptions, by telephone at 800-225-5478 or by the Systematic Withdrawal Plan.Tax InformationFund distributions are generally taxable to you as ordinary income or capital gain, except for distributions to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax law generally.Payments to Broker-Dealers and Other Financial IntermediariesIf you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of the Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

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Fund Summary

ASG Managed Futures Strategy Fund

Investment GoalThe Fund pursues an absolute return strategy that seeks to provide capital appreciation.Fund Fees & Expenses The following tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees(fees paid directly from your investment)	Class Y
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	None
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, as applicable)	None
Redemption fees	None

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)	Class Y
Management fees	1.25%
Other expenses (estimated for the current fiscal year)	0.38%
Total annual fund operating expenses	1.63%
Fee waiver and/or expense reimbursement1	0.16%
Total annual fund operating expenses after fee waiver and/or expense reimbursement	1.47%

ExampleThis example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first year and on the Total Annual Fund Operating Expenses for the remaining years. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	Class Y
1 year	$150
3 years	$499

1 The Fund’s investment adviser has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.45% of the Fund’s average daily net assets for Class Y shares, exclusive of brokerage expenses, interest expense, taxes, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s investment adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 1.45% of the Fund’s average daily net assets for Class Y shares. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

Portfolio TurnoverThe Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. Due to the short-term nature of the Fund’s investment portfolio, the Fund does not calculate a portfolio turnover rate. The Fund’s trading in derivatives is active and frequent. Active and frequent trading of derivatives, like active and frequent trading of securities, will result in transaction costs which reduce fund returns.

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Fund Summary Investments, Risks and PerformancePrincipal Investment Strategies The Fund seeks to generate positive absolute returns over time. Under normal market conditions, the Fund’s adviser, AlphaSimplex Group, LLC (“AlphaSimplex”) typically will make extensive use of a variety of derivative instruments, including futures and forward contracts, to capture the exposures suggested by its absolute return strategy while also seeking to add value through volatility management. These market exposures, which are expected to change over time, may include, for example, exposures to the returns of U.S. and non-U.S. equity and fixed income securities indices (including both broad- and narrow-based securities indices), currencies and commodities. AlphaSimplex uses a proprietary quantitative model to identify price trends in equity, fixed income, currency and commodity instruments. The Fund may have both “short” and “long” exposures within an asset class based upon AlphaSimplex’s analysis of multiple time horizons to identify trends in a particular asset class. A “short” exposure will benefit when the underlying asset class decreases in price. A “long” exposure will benefit when the underlying asset class increases in price. AlphaSimplex will scale the notional exposure of the Fund’s futures and currency forward positions with the objective of targeting a relatively stable level of annualized volatility for the Fund’s overall portfolio. AlphaSimplex will have great flexibility to allocate the Fund’s derivatives exposure among various securities, indices, currencies, commodities and other instruments, and the amount of the Fund’s assets that may be allocated to derivative strategies and among these various instruments is expected to vary over time.Under normal market conditions, it is expected that no more than 25% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to the Fund’s derivative transactions. The notional value of the Fund’s derivative investments, however, will generally exceed 25% of the Fund’s total assets. The Fund expects that under normal market conditions it will invest at least 75% of its total assets in money market and other short-term, high quality securities (such as bankers’ acceptances, certificates of deposit, commercial paper, loan participations, repurchase agreements and time deposits) (the “Money Market Portion”) managed by Reich & Tang Asset Management, LLC (“Reich & Tang”), although the Fund may invest less than this percentage. The assets allocated to the Money Market Portion will be used primarily to support the Fund’s investments in derivatives and, secondarily, to provide the Fund with incremental income and liquidity. Although the Fund will invest a significant portion of its assets in money market instruments, the Fund is not a “money market” fund and the value of the Money Market Portion as well as the value of the Fund’s shares may decrease. The Fund will concentrate its investments in the financial services industry, which means it will normally invest at least 25% of its total assets in securities and other obligations (for example, bank certificates of deposit, repurchase agreements and time deposits) of issuers in such industry.Although the Fund does not intend to invest in physical commodities directly, the Fund expects to obtain investment exposure to commodities and commodity-related derivatives by investing in a wholly-owned subsidiary organized under the laws of the Cayman Islands that will make commodity-related investments (the “Commodity Subsidiary”). Under normal market conditions, no more than 10% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to these transactions.Although the Fund seeks positive absolute returns over time, it is likely that the Fund’s investment returns may be volatile over short periods of time. The Fund may outperform the overall securities market during periods of flat or negative market performance and may underperform during periods of strong market performance. There can be no assurance that the Fund’s returns over time or during any period will be positive or that the Fund will outperform the overall security markets over time or during any particular period.The Fund may engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance.The percentage limitations set forth in this Fund summary are not investment restrictions and the Fund may exceed these limits from time to time.Principal RisksThe principal risks of investing in the Fund are summarized below. The Fund does not represent a complete investment program. You may lose money by investing in the Fund.Commodity Risk: This is the risk that exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of physical commodities or commodity-linked derivative instruments may be affected by changes in overall market movements, commodity price volatility, changes in interest rates, currency fluctuations, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund.

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Fund SummaryCommodity Subsidiary Risk: Investing in the Commodity Subsidiary will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments, such as commodity investments risk. The Commodity Subsidiary is not registered under the Investment Company Act of 1940 (the “1940 Act”) and is not subject to all of the investor protections of the 1940 Act. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its shareholders.Concentrated Investment Risk: The Fund is particularly vulnerable to events affecting companies in the financial services industry because the Fund concentrates its investments in securities and other obligations of issuers in such industry. Examples of risks affecting the financial services industry include changes in governmental regulation, issues relating to the availability and cost of capital, changes in interest rates and/or monetary policy and price competition. In addition, financial services companies are often more highly leveraged than other companies, making them inherently riskier. As a result, the Fund’s shares may rise and fall in value more rapidly and to a greater extent than shares of a fund that does not concentrate or focus in a particular industry or economic sector. The financial services industry has recently experienced high volatility and a number of issuer failures and the value of many of these securities has significantly declined. As a result, the risk associated with investing in the Fund may be increased as compared to a fund that does not concentrate in the financial services industry.Credit/Counterparty Risk: Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.Currency Risk: Fluctuations in the exchange rates between the different currencies may negatively affect an investment. The Fund may hedge its exposure to foreign currencies and may invest in foreign currencies as an asset class.Derivatives Risk: Derivatives are subject to changes in the value of the underlying asset or indices on which such transactions are based. There is no guarantee that the use of derivatives will be effective or that suitable transactions will be available. Even a small investment in derivatives may give rise to leverage risk and can have a significant impact on the Fund’s exposure to securities markets values, interest rates or currency exchange rates. It is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. The use of derivatives for other than hedging purposes may be considered a speculative activity, and involves greater risks than are involved in hedging. The Fund’s use of derivatives, such as futures, forward contracts, foreign currency transactions and commodity-linked derivatives involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward contracts and other OTC derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices, liquidity risk, allocation risk and the risk of losing more than the initial margin required to initiate derivatives positions. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. There can be no assurance that the Fund’s derivative counterparties will not experience financial difficulties, possibly resulting in losses to the Fund.Equity Securities Risk: The value of the Fund’s investments in equity securities could be subject to unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock.Foreign Securities Risk: The Fund’s investments in foreign securities are subject to foreign currency fluctuations. Foreign securities may be subject to higher volatility than U.S. securities, varying degrees of regulation and limited liquidity. Investments in foreign securities may be subject to greater political, economic, environmental, credit and information risks.Interest Rate Risk: Changes in interest rates may cause the value of the Fund’s investments to decrease. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment.Issuer Risk: The value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.Leverage Risk: This is the risk associated with securities or practices (e.g., borrowing and the use of certain derivatives) and investment in certain types of derivatives that multiply small index or market movements into larger changes in value. Use of derivative instruments may involve leverage. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially

15

Fund Summary offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. Futures and forward currency contracts are derivatives and may be subject to this type of risk.Liquidity Risk: Liquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Illiquid investments also may be difficult to value.Management Risk: A strategy used by the Fund’s portfolio managers may fail to produce the intended result. The Adviser utilizes various proprietary quantitative models to identify investment opportunities. There is a possibility that one or all of the quantitative models may fail to identify profitable opportunities at any time. Furthermore, they may incorrectly identify opportunities and these misidentified opportunities may lead to substantial losses.Market Risk: The market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions. The Fund’s portfolio managers will attempt to reduce this risk by implementing various volatility management strategies and techniques. However, there is no guarantee that such strategies and techniques will produce the intended result.Mortgage-Related and Asset-Backed Securities Risk: In addition to the risks associated with investments in fixed-income securities generally (for example, credit, liquidity and valuation risk), mortgage-related and asset-backed securities are subject to the risks of the mortgages and assets underlying the securities as well as prepayment risk, the risk that the securities may be prepaid and result in the reinvestment of the prepaid amounts in securities with lower yields than the prepaid obligations. Conversely, there is a risk that an unexpected rise in interest rates will extend the life of a mortgage-related or asset-backed security beyond the expected prepayment time, typically reducing the security’s value. The Fund also may incur a loss when there is a prepayment of securities that were purchased at a premium. The Fund’s investments in other asset-backed securities are subject to risks similar to those associated with mortgage-related securities, as well as additional risks associated with the nature of the assets and the servicing of those assets.U.S. Government Securities Risk: Investments in certain U.S. government securities may not be supported by the full faith and credit of the U.S. government. Accordingly, no assurance can be given that the U.S. government will provide financial support to U.S. government agencies, instrumentalities or sponsored enterprises if it is not obligated to do so by law. The maximum potential liability of the issuers of some U.S. government securities held by the Fund may greatly exceed their current resources, and it is possible that these issuers will not have the funds to meet their payment obligations in the future. In such a case, the Fund would have to look principally to the agency, instrumentality or sponsored enterprise issuing or guaranteeing the security for ultimate repayment, and the Fund may not be able to assert a claim against the U.S. government itself in the event the agency, instrumentality or sponsored enterprise does not meet its commitment. Concerns about the capacity of the U.S. government to meet its obligations may raise the interest rates payable on its securities, negatively impacting the price of such securities already held by the Fund.Valuation Risk: This is the risk that the Fund has valued certain securities at a higher price than the price at which they can be sold. This risk may be especially pronounced for investments, such as derivatives, which may be illiquid or which may become illiquid.Risk/Return Bar Chart and TableBecause the Fund has not been in existence for a full calendar year, information related to the Fund’s performance, including a bar chart showing annual returns, has not been included in this Prospectus. The performance information provided by the Fund in the future will give some indication of the risks of an investment in the Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns compare against those of a broad measure of market performance.ManagementInvestment Adviser AlphaSimplex Group, LLCInvestment SubadviserReich & Tang Asset Management, LLCPortfolio ManagersAndrew W. Lo, Chief Investment Strategist of AlphaSimplex, has served as co-portfolio manager of the Fund since July 2010.Jeremiah H. Chafkin, President of AlphaSimplex, has served as co-portfolio manager of the Fund since July 2010.Robert S. Rickard, Senior Vice President and head of Portfolio Management and Trading of Reich & Tang, has served as co-portfolio manager of the Fund since July 2010.

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Fund Summary Purchase and Sale of Fund SharesClass Y shares of the Fund may be purchased by the following entities at the following investment minimums.A minimum initial investment of $100,000 and the minimum subsequent investment of $100 for:

• Other mutual funds, endowments, foundations, bank trust departments or trust companies.

There is no initial or subsequent investment minimum for:

• Wrap Fee Programs of certain broker-dealers, the advisers or Natixis Distributors, L.P. (the “Distributor”). Such wrap fee programs may be subject to additional or different conditions, including a wrap account fee. Each broker-dealer is responsible for transmitting to its customer a schedule of fees and other information regarding any such conditions.
• Retirement Plans such as 401(a), 401(k) or 457 plans.
• Certain Individual Retirement Accounts if the amounts invested represent rollover distributions from investments by any of the retirement plans invested in the Fund as set forth above.
• Registered Investment Advisers investing on behalf of clients in exchange for an advisory, management or consulting fee.
• Fund Trustees, former Fund trustees, employees of affiliates of the Natixis Funds and other individuals who are affiliated with any Natixis Fund (this also applies to any spouse, parents, children, siblings, grandparents, grandchildren and in-laws of those mentioned) and Natixis affiliate employee benefit plans.
  

Due to operational limitations at your financial intermediary, certain wrap fee programs, retirement plans, individual retirement accounts and accounts of registered investment advisers may be subject to the investment minimums described above. Please consult your financial representative for more information.At the discretion of Natixis Asset Management Advisors, L.P. (“Natixis Advisors”), clients of Natixis Advisors and its affiliates may purchase Class Y shares of the Fund below the stated minimums.The Fund’s shares are available for purchase (and are redeemable on any business day) through your investment dealer, directly from the Fund by writing to the Fund at Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, by exchange, by wire, by internet at ga.natixis.com, through the Automated Clearing House system, or, in the case of redemptions, by telephone at 800-225-5478 or by the Systematic Withdrawal Plan.Tax InformationFund distributions are generally taxable to you as ordinary income or capital gain, except for distributions to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax law generally.Payments to Broker-Dealers and Other Financial IntermediariesIf you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of the Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

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Fund Summary

Gateway Fund

Investment GoalThe Fund seeks to capture the majority of the returns associated with equity market investments, while exposing investors to less risk than other equity investments.Fund Fees & Expenses The following tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees(fees paid directly from your investment)	Class Y
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	None
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, as applicable)	None
Redemption fees	None

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)	Class Y
Management fees	0.65%
Other expenses	0.15%
Total annual fund operating expenses	0.80%
Fee waiver and/or expense reimbursement1	0.10%
Total annual fund operating expenses after fee waiver and/or expense reimbursement	0.70%

ExampleThis example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first year and on the Total Annual Fund Operating Expenses for the remaining years. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	Class Y
1 year	$72
3 years	$245
5 years	$434
10 years	$980

1 Gateway Investment Advisers, LLC (the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.70% of the Fund’s average daily net assets for Class Y shares, exclusive of organizational expenses, brokerage expenses, interest expense, taxes and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 0.70% of the Fund’s average daily net assets for Class Y shares. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

Portfolio TurnoverThe Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During its most recently ended fiscal year, the Fund’s portfolio turnover rate was 7% of the average value of its portfolio.

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Fund Summary Investments, Risks and Performance Principal Investment Strategies Under normal circumstances, the Fund invests in a broadly diversified portfolio of common stocks, while also selling index call options. The Fund also buys index put options, which can protect the Fund from a significant market decline that may occur over a short period of time. The combination of the diversified stock portfolio, the cash flow from the sale of index call options and the downside protection from index put options is intended to provide the Fund with the majority of the returns associated with equity market investments while exposing investors to less risk than other equity investments. The Fund typically invests in companies with small, medium or large market capitalizations. Equity securities purchased by the Fund may include U.S.-exchange-listed common stocks, American Depositary Receipts (ADRs), and interests in real estate investment trusts (REITs).From time to time, the Fund may reduce its holdings of put options, resulting in an increased exposure to a market decline. The Fund may invest in foreign securities traded in U.S. markets (through ADRs or stocks traded in U.S. dollars). The Fund may also invest in other investment companies, including money market funds, to the extent permitted by the Investment Company Act of 1940 (the “1940 Act”). The Fund may enter into repurchase agreements and/or hold cash and cash equivalents. As a temporary defensive measure, the Fund may purchase U.S. government securities, certificates of deposit, commercial paper, bankers’ acceptance, and/or repurchase agreements or hold cash (U.S. dollars, foreign currencies or multinational currency units) for temporary defensive purposes in response to adverse market, economic or political conditions, or, under normal circumstances, for purposes of liquidity. These investments may prevent the Fund from achieving its investment objective.The Fund not only strives for the majority of the returns associated with equity market investments, but also returns in excess of those available from other investments comparable in volatility. With its core investment in equities, the Fund is significantly less vulnerable to fluctuations in value caused by interest rate volatility, a risk factor present in both fixed income investments and “hybrid investments” (blends of equity and short-term fixed income), although the Fund expects to generally have lower long-term returns than a portfolio consisting solely of equity securities. The Fund intends that its index option-based risk management strategy will limit the volatility inherent in equities while sacrificing less of the higher equity returns than hybrid investments.Principal RisksThe principal risks of investing in the Fund are summarized below. The Fund does not represent a complete investment program. You may lose money by investing in the Fund.Correlation Risk: The effectiveness of the Fund’s index option-based risk management strategy may be reduced if the performance of the Fund’s equity portfolio does not correlate to that of the index underlying its option positions.Equity Securities Risk: The value of the Fund’s investments in equity securities could be subject to unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock. Small- and mid-capitalization and emerging growth companies may be subject to more abrupt price movements, limited markets and less liquidity than larger, more established companies, which could adversely effect the value of the Fund’s portfolio.Foreign Securities Risk: The Fund’s investments in foreign securities are subject to foreign currency fluctuations. Foreign securities may be subject to higher volatility than U.S. securities, varying degrees of regulation and limited liquidity. Investments in foreign securities may be subject to greater political, economic, environmental, credit and information risks.Investments in Other Investment Companies Risk: The Fund will indirectly bear the management, service and other fees of the other investment companies in which it invests in addition to its own expenses.Management Risk: A strategy used by the Fund’s portfolio managers may fail to produce the intended result.Market Risk: The market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions.Options Risk: The value of the Fund’s positions in index options could fluctuate in response to changes in the value of the underlying index. Writing index call options can reduce the risk of owning stocks, but it limits the opportunity to profit from an increase in the market value of stocks in exchange for up-front cash at the time of selling the call option. The Fund also risks losing all or part of the cash paid for purchasing index put options. Unusual market conditions or the lack of a ready market for any particular option at a specific time may reduce the effectiveness of the Fund’s option strategies, and for these and other reasons the Fund’s option strategies may not reduce the Fund’s volatility to the extent desired.REITs Risk: Investments in the real estate industry, including REITs, are particularly sensitive to economic downturns and are sensitive to factors such as changes in real estate values, property taxes and tax laws, interest rates, cash flow of underlying real estate assets, occupancy rates, government regulations affecting zoning, land use and rents and the management skill and creditworthiness of the issuer. Companies in the real estate industry also may be subject to liabilities under environmental and hazardous waste laws. In addition, the value of a REIT is affected by changes in the value of the

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Fund Summary properties owned by the REIT or mortgage loans held by the REIT. REITs are also subject to default and prepayment risk. Many REITs are highly leveraged, increasing their risk. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests in addition to the expenses of the Fund.Risk/Return Bar Chart and Table The bar chart and table shown below provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year-to-year and by showing how the Fund’s average annual returns for the one-year, five-year and ten-year periods compare with those of a broad measure of equity market performance and a measure of the performance of investment-grade bonds. The Fund’s past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information is available online at ga.natixis.com and/or by calling the Fund toll-free at 800-225-5478. The returns shown in the bar chart and the table for periods before February 19, 2008 are those of the Fund’s predecessor (the “Gateway Predecessor Fund”).Total Returns for Class Y

	Highest Quarterly Return: Fourth Quarter 2002, 9.55%
	Lowest Quarterly Return: Fourth Quarter 2008, -11.10%

Average Annual Total Returns (for the periods ended December 31, 2010)	Past 1 Year	Past 5 Years	Past 10 Years
Gateway Fund Class Y - Return Before Taxes	5.13%	2.86%	2.82%
Return After Taxes on Distributions	4.84%	2.40%	2.41%
Return After Taxes on Distributions & Sales of Fund Shares	3.69%	2.28%	2.23%
S&P 500 Index	15.06%	2.29%	1.41%
Barclays Capital U.S. Aggregate Bond Index	6.54%	5.80%	5.84%

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans, qualified plans, education savings accounts, such as 529 plans, or individual retirement accounts. Index performance reflects no deduction for fees, expenses or taxes.ManagementInvestment AdviserGateway Investment Advisers, LLCPortfolio ManagersJ. Patrick Rogers, CFA, president and CEO of the Adviser, has served as co-portfolio manager of the Fund (including the Gateway Predecessor Fund) since December 2006. Mr. Rogers was previously portfolio manager from 1997 to December 2006 and prior to that co-portfolio manager from 1994.Paul R. Stewart, CFA, senior vice president and chief investment officer of the Adviser, has served as co-portfolio manager of the Fund (including the Gateway Predecessor Fund) since December 2006.Michael T. Buckius, CFA, senior vice president and portfolio manager of the Adviser, has served as co-portfolio manager of the Fund since June 2008.

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Fund Summary Purchase and Sale of Fund SharesClass Y shares of the Fund may be purchased by the following entities at the following investment minimums.A minimum initial investment of $100,000 and the minimum subsequent investment of $100 for:

• Other mutual funds, endowments, foundations, bank trust departments or trust companies.

There is no initial or subsequent investment minimum for:

• Wrap Fee Programs of certain broker-dealers, the advisers or Natixis Distributors, L.P. (the “Distributor”). Such wrap fee programs may be subject to additional or different conditions, including a wrap account fee. Each broker-dealer is responsible for transmitting to its customer a schedule of fees and other information regarding any such conditions.
• Retirement Plans such as 401(a), 401(k) or 457 plans.
• Certain Individual Retirement Accounts if the amounts invested represent rollover distributions from investments by any of the retirement plans invested in the Fund as set forth above.
• Registered Investment Advisers investing on behalf of clients in exchange for an advisory, management or consulting fee.
• Fund Trustees, former Fund trustees, employees of affiliates of the Natixis Funds and other individuals who are affiliated with any Natixis Fund (this also applies to any spouse, parents, children, siblings, grandparents, grandchildren and in-laws of those mentioned) and Natixis affiliate employee benefit plans.
  

Due to operational limitations at your financial intermediary, certain wrap fee programs, retirement plans, individual retirement accounts and accounts of registered investment advisers may be subject to the investment minimums described above. Please consult your financial representative for more information.At the discretion of Natixis Asset Management Advisors, L.P. (“Natixis Advisors”), clients of Natixis Advisors and its affiliates may purchase Class Y shares of the Fund below the stated minimums.The Fund’s shares are available for purchase (and are redeemable on any business day) through your investment dealer, directly from the Fund by writing to the Fund at Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, by exchange, by wire, by internet at ga.natixis.com, through the Automated Clearing House system, or, in the case of redemptions, by telephone at 800-225-5478 or by the Systematic Withdrawal Plan.Tax InformationFund distributions are generally taxable to you as ordinary income or capital gain, except for distributions to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax law generally.Payments to Broker-Dealers and Other Financial IntermediariesIf you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of the Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

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Fund Summary

Loomis Sayles Absolute Strategies Fund

Investment GoalThe Fund seeks to provide an attractive absolute total return, complemented by prudent investment management designed to manage risks and protect investor capital. The secondary goal of the Fund is to achieve these returns with relatively low volatility.Fund Fees & Expenses The following tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees(fees paid directly from your investment)	Class Y
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	None
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, as applicable)	None
Redemption fees	None

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)	Class Y
Management fees	0.70%
Other expenses (estimated for the current fiscal year)	0.31%
Acquired Fund Fees and Expenses (estimated for the current fiscal year)	0.02%
Total annual fund operating expenses	1.03%
Fee waiver and/or expense reimbursement1	0.00%
Total annual fund operating expenses after fee waiver and/or expense reimbursement	1.03%

ExampleThis example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	Class Y
1 year	$105
3 years	$328

1 Loomis, Sayles & Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.05% of the Fund’s average daily net assets for Class Y shares, exclusive of brokerage expenses, interest expense, taxes, Acquired Fund Fees and Expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 1.05% of the Fund’s average daily net assets for Class Y shares. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed.

Portfolio TurnoverThe Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During its most recently ended fiscal year, the Fund’s portfolio turnover rate was 39% of the average value of its portfolio covering the period December 15, 2010 through December 31, 2010.

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Fund Summary Investments, Risks and PerformancePrincipal Investment Strategies The Fund has an absolute return investment objective, which means that it is not managed relative to an index and that it attempts to achieve positive total returns over a full market cycle. The Fund intends to pursue its objective by utilizing a flexible investment approach that allocates investments across a global range of investment opportunities related to credit, currencies and interest rates, while employing risk management strategies to mitigate downside risk. The Fund may invest up to 100% of its total assets in below investment-grade fixed-income securities (also known as “junk bonds”) and derivatives that have returns related to the returns on below investment-grade fixed-income securities, although it is expected that, under normal market conditions, the Fund’s net exposure (i.e., long exposures obtained through direct investments in securities and in derivatives minus short exposures obtained through derivatives) to below investment-grade fixed-income assets generally will not exceed 50% of the Fund’s total assets. Under normal market conditions, the Fund also may invest up to 50% of its total assets in investments denominated in non-U.S. currencies and related derivatives, including up to 20% in investments denominated in emerging market currencies and related derivatives. The Fund expects that its exposure to these asset classes will often be obtained substantially through the use of derivative instruments. Currency positions that are intended to hedge the Fund’s non-U.S. currency exposure (i.e., currency positions that are not made for investment purposes) will offset positions in the same currency that are made for investment purposes when calculating the limitation on investments in non-U.S. and emerging market currency investments because the Fund believes that hedging a currency position is likely to negate some or all of the currency risk associated with the original currency position. The Fund does not have limits on the duration of its portfolio, and the Fund’s duration will change over time.In selecting investments for the Fund, the Adviser develops long-term portfolio themes driven by macro-economic indicators. These include secular global economic trends, demographic trends and labor supply, analysis of global capital flows and assessments of geopolitical factors. The Adviser then develops shorter-term portfolio strategies based on factors including, but not limited to, economic, credit and Federal Reserve cycles, and top-down sector valuations and bottom-up security valuations. The Adviser employs active risk management, with a focus on credit, interest rate and currency risks. Additionally, the portfolio managers will use risk management tools in constructing and optimizing the portfolio and seek to manage risk on an ongoing basis. The portfolio management team expects to actively evaluate each investment idea based upon its return potential, its level of risk and its fit within the team’s overall macro strategy when deciding whether to buy or sell investments.The Fund will pursue its investment goal by obtaining long investment exposures through direct cash investments and derivatives and short investment exposures substantially through derivatives. A “long” investment exposure is an investment that rises in value with a rise in the value of an asset, asset class or index and declines in value with a decline in the value of that asset, asset class or index. A “short” investment exposure is an investment that rises in value with a decline in the value of an asset, asset class or index and declines in value with a rise in the value of that asset, asset class or index. The Fund’s long and short investment exposures may, at times, each reach 100% of the assets invested in the Fund (excluding instruments primarily used for duration management and short-term investments (such as cash and money market instruments)), although these exposures may be higher or lower at any given time.Fixed-Income Investments. In connection with its principal investment strategies, the Fund may invest in a broad range of U.S. and non-U.S. fixed-income securities, including, but not limited to, corporate bonds, municipal securities, U.S. and non-U.S. government securities (including their agencies, instrumentalities and sponsored entities), securities of supranational entities, emerging market securities, commercial and residential mortgage-backed securities, collateralized mortgage obligations, other mortgage-related securities (such as adjustable rate mortgage securities), asset-backed securities, bank loans, convertible bonds, Rule 144A securities, real estate investment trusts (“REITs”), zero-coupon securities, step coupon securities, pay-in-kind securities, inflation-linked bonds, variable and floating rate securities, private placements and commercial paper.Non-U.S. Currency Investments. Under normal market conditions, the Fund may engage in a broad range of transactions involving non-U.S. and emerging market currencies, including, but not limited to, purchasing and selling forward currency exchange contracts in non-U.S. or emerging market currencies, investing in non-U.S. currency futures contracts, investing in options on non-U.S. currencies and non-U.S. currency futures, investing in cross-currency instruments (such as swaps), investing directly in non-U.S. currencies and investing in securities denominated in non-U.S. currencies. The Fund may engage in non-U.S. currency transactions for investment or for hedging purposes.Derivative Investments. For investment and hedging purposes, the Fund may invest substantially in a broad range of derivatives instruments and sometimes the majority of its investment returns will derive from its derivative investments. These derivative instruments include, but are not limited to, futures contracts (such as treasury futures and index futures), forward contracts, options (such as options on futures contracts, options on securities, interest rate/bond options, currency options, options on swaps and OTC options), warrants (such as non-U.S. currency warrants) and swap transactions (such as interest rate swaps, total return swaps and index swaps). In addition, the Fund may invest in credit derivative products that may be used to manage default risk and credit exposure. Examples of such products include, but are not limited to, credit default swap index products (such as LCDX, CMBX and ABX index products), single name credit default swaps, loan credit default swaps and asset-backed credit default swaps. Derivative instruments (such as those listed above) can be used to acquire or to transfer the risk and returns of a security without buying or selling the security. The Fund’s strategy may be highly dependent on the use of derivatives, and to the extent that they become unavailable or unattractive the Fund may be unable to fully implement its investment strategy.

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Fund Summary The Fund is non-diversified, which means that it is not limited to a percentage of assets that it may invest in any one issuer.The Fund expects to engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance.The percentage limitations set forth herein are not investment restrictions and the Fund may exceed these limits from time to time. In addition, when calculating these exposures, the Fund may use the notional value or an adjusted notional value of a derivative in order to reflect what the Adviser believes to be the most accurate assessment of the Fund’s real economic exposure.
Principal RisksThe principal risks of investing in the Fund are summarized below. The Fund does not represent a complete investment program. You may lose money by investing in the Fund.Agency Securities Risk: Agency securities are subject to fixed-income securities risk. Certain debt securities issued or guaranteed by agencies of the U.S. government are guaranteed as to the payment of principal and interest by the relevant entity but have not been backed by the full faith and credit of the U.S. government. Instead, they have been supported only by the discretionary authority of the U.S. government to purchase the agency’s obligations. An event affecting the guaranteeing entity could adversely affect the payment of principal or interest or both on the security and, therefore, these types of securities should be considered to be riskier than U.S. government securities.Below Investment-Grade Fixed-Income Securities Risk: This is the risk that the Fund’s investments in below investment-grade fixed-income securities, also known as “junk bonds,” may be subject to greater risks than other fixed-income securities, including being subject to greater levels of interest rate risk, credit risk (including a greater risk of default) and liquidity risk. The ability of the issuer to make principal and interest payments is predominantly speculative for below investment-grade fixed-income securities.Credit/Counterparty Risk: Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.Currency Risk: Fluctuations in the exchange rates between different currencies may negatively affect an investment. The Fund may be subject to currency risk because it may invest a significant portion of its assets in currency-related instruments, such as forward currency exchange contracts, foreign currency futures contracts, options on foreign currencies and foreign currency futures, cross-currency instruments (such as swaps) and direct investments in foreign currencies. The Fund also is subject to currency risk because it may invest in securities or other instruments denominated in, or receive revenues in, foreign currencies. The Adviser may elect not to hedge currency risk, which may cause the Fund to incur losses that would not have been incurred had the risk been hedged.Derivatives Risk: Derivatives are subject to changes in the value of the underlying asset or indices on which such transactions are based. There is no guarantee that the use of derivatives will be effective or that suitable transactions will be available. Even a small investment in derivatives may give rise to leverage risk and can have a significant impact on the Fund’s exposure to securities markets values, interest rates or currency exchange rates. It is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. The use of derivatives for other than hedging purposes may be considered a speculative activity, and involves greater risks than are involved in hedging. The Fund’s use of derivatives, such as futures, forward contracts, options, warrants, foreign currency transactions, swaps and credit default swaps, involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward contracts, swaps and other OTC derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices, liquidity risk, allocation risk and the risk of losing more than the initial margin required to initiate derivatives positions. There can be no assurance that the Fund’s derivative counterparties will not experience financial difficulties, possibly resulting in losses to the Fund. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price.Emerging Markets Risk: Investing in emerging markets companies, which may be smaller and have shorter operating histories than companies in developed markets, involves risks in addition to, and greater than, those generally associated with investing in companies in developed foreign markets. The extent of economic development, political stability, market depth, infrastructure, capitalization and regulatory oversight in emerging market economies is generally less than in more developed markets.

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Fund Summary Fixed-Income Securities Risk: Fixed-income securities are subject to credit risk, interest rate risk and liquidity risk. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. You may lose money on your investment due to unpredictable drops in a security’s value or periods of below-average performance in a given security or in the securities market as a whole. In addition, an economic downturn or period of rising interest rates could adversely affect the market of these securities and reduce the Fund’s ability to sell them.Foreign Securities Risk: The Fund’s investments in foreign securities are subject to foreign currency fluctuations. Foreign securities may be subject to higher volatility than U.S. securities, varying degrees of regulation and limited liquidity. Investments in foreign securities may be subject to greater political, economic, environmental, credit and information risks.Inflation/Deflation Risk: Inflation risk is the risk that the value of assets or income from investments will be worth less in the future as inflation decreases the present value of future payments. Deflation risk is the risk that prices throughout the economy decline over time (the opposite of inflation). Deflation may have an adverse effect on the creditworthiness of issuers and may make issuer default more likely, which may result in a decline in the value of the Fund’s portfolio. Because the Fund seeks positive returns that exceed the rate of inflation over time, if the portfolio managers’ inflation forecasts are incorrect, the Fund may be more severely impacted than other funds.Interest Rate Risk: Changes in interest rates may cause the value of the Fund’s investments to decrease. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment.Issuer Risk: The value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.Leverage Risk: Use of derivative instruments may involve leverage. Leverage is the risk associated with securities or practices that multiply small index, market or asset price movements into larger changes in value. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. The use of leverage will increase the impact of gains and losses on the Fund’s returns, and may lead to significant losses if investments are not successful. However, the Adviser will attempt to ensure that at all times, the Fund has sufficient liquid assets to enable it to satisfy its obligations under its derivative contracts.Liquidity Risk: Liquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Illiquid investments also may be difficult to value.Management Risk: A strategy used by the Fund’s portfolio managers may fail to produce the intended result.Market Risk: The market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions. The Fund’s portfolio managers will attempt to reduce this risk by implementing various volatility management strategies and techniques. However, there is no guarantee that such strategies and techniques will produce the intended result.Mortgage-Related and Asset-Backed Securities Risk: In addition to the risks associated with investments in fixed-income securities generally (for example, credit, liquidity and valuation risk), mortgage-related and asset-backed securities are subject to the risks of the mortgages and assets underlying the securities as well as prepayment risk, the risk that the securities may be prepaid and result in the reinvestment of the prepaid amounts in securities with lower yields than the prepaid obligations. Conversely, there is a risk that an unexpected rise in interest rates will extend the life of a mortgage-related or asset-backed security beyond the expected prepayment time, typically reducing the security’s value. The Fund also may incur a loss when there is a prepayment of securities that were purchased at a premium. The Fund’s investments in other asset-backed securities are subject to risks similar to those associated with mortgage-related securities, as well as additional risks associated with the nature of the assets and the servicing of those assets.Non-Diversification Risk: Compared with other mutual funds, the Fund may invest a greater percentage of its assets in a particular issuer and may invest in fewer issuers. Therefore, the Fund may have more risk because changes in the value of a single security or the impact of a simple economic, political or regulatory occurrence may have a greater adverse impact on the Fund’s NAV.Short Exposure Risk: A short exposure through a derivative may present various risks, including credit/counterparty risk and leverage risk. If the value of the asset, asset class or index on which the Fund has obtained a short investment exposure increases, the Fund will incur a loss. Unlike a direct cash investment like a stock, bond or exchange-traded fund, where the potential loss is limited to the purchase price, the potential risk of loss from a short exposure is theoretically unlimited.

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Fund Summary Risk/Return Bar Chart and TableBecause the Fund has not been in existence for a full calendar year, information related to the Fund’s performance, including a bar chart showing annual returns, has not been included in this Prospectus. The performance information provided by the Fund in the future will give some indication of the risks of an investment in the Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns compare against those of a broad measure of market performance.ManagementInvestment AdviserLoomis, Sayles & Company, L.P.Portfolio ManagersMatthew J. Eagan, Vice President of the Adviser, has served as co-portfolio manager of the Fund since December 2010.Kevin Kearns, Vice President of the Adviser, has served as co-portfolio manager of the Fund since December 2010.Todd P. Vandam, Vice President of the Adviser, has served as co-portfolio manager of the Fund since December 2010.Purchase and Sale of Fund SharesClass Y shares of the Fund may be purchased by the following entities at the following investment minimums.A minimum initial investment of $100,000 and the minimum subsequent investment of $100 for:

• Other mutual funds, endowments, foundations, bank trust departments or trust companies.

There is no initial or subsequent investment minimum for:

• Wrap Fee Programs of certain broker-dealers, the advisers or Natixis Distributors, L.P. (the “Distributor”). Such wrap fee programs may be subject to additional or different conditions, including a wrap account fee. Each broker-dealer is responsible for transmitting to its customer a schedule of fees and other information regarding any such conditions.
• Retirement Plans such as 401(a), 401(k) or 457 plans.
• Certain Individual Retirement Accounts if the amounts invested represent rollover distributions from investments by any of the retirement plans invested in the Fund as set forth above.
• Registered Investment Advisers investing on behalf of clients in exchange for an advisory, management or consulting fee.
• Fund Trustees, former Fund trustees, employees of affiliates of the Natixis Funds and other individuals who are affiliated with any Natixis Fund (this also applies to any spouse, parents, children, siblings, grandparents, grandchildren and in-laws of those mentioned) and Natixis affiliate employee benefit plans.
  

Due to operational limitations at your financial intermediary, certain wrap fee programs, retirement plans, individual retirement accounts and accounts of registered investment advisers may be subject to the investment minimums described above. Please consult your financial representative for more information.At the discretion of Natixis Asset Management Advisors, L.P. (“Natixis Advisors”), clients of Natixis Advisors and its affiliates may purchase Class Y shares of the Fund below the stated minimums.The Fund’s shares are available for purchase (and are redeemable on any business day) through your investment dealer, directly from the Fund by writing to the Fund at Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, by exchange, by wire, by internet at ga.natixis.com, through the Automated Clearing House system, or, in the case of redemptions, by telephone at 800-225-5478 or by the Systematic Withdrawal Plan.Tax InformationFund distributions are generally taxable to you as ordinary income or capital gain, except for distributions to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax law generally.Payments to Broker-Dealers and Other Financial IntermediariesIf you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of the Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

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Fund Summary

Loomis Sayles Multi-Asset Real Return Fund

Investment GoalThe Fund seeks to maximize real returns consistent with prudent investment management.Fund Fees & Expenses The following tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund.

Shareholder Fees(fees paid directly from your investment)	Class Y
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	None
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, as applicable)	None
Redemption fees	None

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)	Class Y
Management fees	0.75%
Other expenses (estimated for the current fiscal year)	0.88%
Acquired Fund Fees and Expenses (estimated for the current fiscal year)	0.05%
Total annual fund operating expenses	1.68%
Fee waiver and/or expense reimbursement1	0.53%
Total annual fund operating expenses after fee waiver and/or expense reimbursement	1.15%

ExampleThis example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the example is based on Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first year and on the Total Annual Fund Operating Expenses for the remaining years. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	Class Y
1 year	$117
3 years	$478

1 Loomis, Sayles & Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.10% of the Fund’s average daily net assets for Class Y shares, exclusive of brokerage expenses, interest expense, taxes, Acquired Fund Fees and Expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2012 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 1.10% of the Fund’s average daily net assets for Class Y shares. The Fund will not be obligated to repay any such waived/reimbursed fees or expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed.

Portfolio TurnoverThe Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During its most recently ended fiscal year, the Fund’s portfolio turnover rate was 139% of the average value of its portfolio covering the period from September 30, 2010 through December 31, 2010.

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Fund Summary Investments, Risks and PerformancePrincipal Investment Strategies The Fund will pursue its investment goal primarily through exposure to investments in fixed-income securities, equity securities, currencies and commodity-linked instruments. The Fund expects that its exposure to these asset classes will often be obtained substantially through the use of derivative instruments. The Fund is designed for investors seeking “real returns” (i.e., total returns that exceed the rate of inflation over a full market cycle regardless of market conditions). Although the Fund seeks positive total returns over time, the Fund’s investment returns may be volatile over short periods of time. The Fund may outperform the overall securities market during periods of flat or negative market performance and may underperform during periods of strong market performance. There can be no assurance that the Fund’s returns over time or during any period will be positive or that the Fund will provide returns in excess of inflation over time or during any particular period. The Fund does not have limits on the duration of its portfolio, and the Fund’s duration will change over time.In selecting investments for the Fund, the Adviser seeks to draw on its macroeconomic research in global inflationary cycles to identify and to implement investment opportunities that it believes will outpace inflation in a variety of inflationary environments. Using a global asset allocation analysis, the portfolio managers seek to identify the relative return potential of various asset classes. This analysis is intended to provide the foundation for weighting the asset classes as a whole to develop a portfolio with superior risk and return characteristics in the view of the Adviser. The Adviser expects to use a bottom-up investment process to generate investment ideas consistent with the expectations for the asset classes. This will utilize the Adviser’s robust research resources, which include, but are not limited to, fundamental and quantitative capabilities. Additionally, the portfolio managers will use risk management tools to construct the portfolio and manage risk and volatility on an ongoing basis with an objective of targeting a relatively stable level of annualized volatility for the Fund’s overall portfolio. The portfolio management team expects to actively evaluate each investment idea based upon its return potential, its level of risk and its fit within the team’s overall macro strategy when deciding whether to buy or sell investments.The Fund will pursue its investment goal by obtaining long investment exposures through direct cash investments and derivatives and short investment exposures substantially through derivatives. A “long” investment exposure is an investment that rises in value with a rise in the value of an asset, asset class or index and declines in value with a decline in the value of that asset, asset class or index. A “short” investment exposure is an investment that rises in value with a decline in the value of an asset, asset class or index and declines in value with a rise in the value of that asset, asset class or index. The Fund’s long and short investment exposures may, at times, each reach 100% of the assets invested in the Fund (excluding instruments primarily used for duration management and short-term investments (such as cash and money market instruments)), although these exposures may be higher or lower at any given time.Fixed-Income Investments. Under normal market conditions, the Fund expects to invest at least 50% of its total assets in fixed-income securities and derivatives that have returns related to the returns on fixed-income securities. The Fund may invest in a broad range of U.S. and non-U.S. fixed-income securities, including, but not limited to, corporate bonds, municipal securities, U.S. and non-U.S. government securities (including their agencies, instrumentalities and sponsored entities), securities of supranational entities, partnership securities, commercial and residential mortgage-backed securities, other mortgage-related securities (such as adjustable rate mortgage securities), asset-backed securities, bank loans, depositary receipts, convertible bonds, Rule 144A securities, real estate investment trusts (“REITs”), zero-coupon securities, step coupon securities, stripped securities, pay-in-kind securities, inflation-linked bonds, variable and floating rate securities, when-issued securities, private placements, privatizations, hybrid instruments, structured investments, repurchase agreements and commercial paper. The Fund may invest in securities of any maturity, market sector or credit quality, including below investment-grade fixed-income securities (also known as “junk bonds”). Below investment-grade fixed-income securities are below investment-grade quality (i.e., none of the three major rating agencies (Moody’s Investors Service, Inc. (“Moody’s”), Fitch Investors Service, Inc. (“Fitch”) or Standard & Poor’s Ratings Group (“S&P”)) have rated the securities in one of their top four ratings categories) or, if the security is unrated, the Adviser has determined it to be of comparable quality.Equity Investments. Although the Fund expects that in normal market conditions it will have net long equity exposures, in the Adviser’s sole discretion the Fund may have net short equity exposures of up to 35% of the Fund’s total assets and gross short equity exposures of up to 70% of the Fund’s total assets. For these purposes, a short equity position is a position that will decline in value with a rise of the equity markets. A gross short equity position represents the total of all short positions without regard to any offsetting long positions. A net short equity position is the total of all short positions offset by any long positions (e.g., a direct investment in a stock). The Adviser may have net short equity exposures for investment or hedging purposes, including but not limited to macro hedges to protect the Fund’s entire portfolio or more targeted hedges to neutralize specific components of the Fund’s equity market exposure. The Fund may invest in a broad range of U.S. and non-U.S. equity securities, including, but not limited to, common and preferred stocks, convertible preferred stocks, depositary receipts, warrants, rights, Rule 144A securities, private placements, privatizations, hybrid instruments, equity-linked securities and other equity interests. The Fund may invest in securities of issuers of any market capitalization. In addition to direct investment in securities and other instruments, the Fund may invest in other funds, including exchange-traded funds (“ETFs”). The Fund may invest in REITs and U.S. and non-U.S. real estate companies.Non-U.S. Currency Investments. Under normal market conditions, the Fund expects to invest up to 30% of its total assets in investments in non-U.S. currencies, securities denominated in non-U.S. currencies and related derivative transactions. The Fund may engage in a broad range of transactions involving non-U.S. currencies, including, but not limited to, purchasing and selling forward currency exchange contracts in non-U.S. currencies,

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Fund Summary investing in non-U.S. currency futures contracts, investing in options on non-U.S. currencies and non-U.S. currency futures, cross-hedging between two or more currencies, investing directly in non-U.S. currencies and investing in securities denominated in non-U.S. currencies, including securities of emerging market issuers. The Fund may engage in non-U.S. currency transactions for investment or for hedging purposes. Currency positions that are intended to hedge the Fund’s non-U.S. currency exposure (i.e., currency positions that are not made for investment purposes) will offset positions in the same currency that are made for investment purposes when calculating the 30% limitation in investments in non-U.S. currency investments because the Fund believes that hedging a currency position is likely to negate some or all of the currency risk associated with the original currency position.Commodity Investments. Under normal market conditions, the Fund expects that up to 25% of its total assets will be invested in commodity-linked instruments. Commodities are assets that have tangible properties, such as oil, metals, and agricultural products. A “commodity-linked instrument” is an instrument whose value is linked to the price movement of a commodity, a commodity index, or a commodity option or futures contract. An investment in a commodity-linked instrument does not generally provide a claim to the tangible underlying commodity. The Fund may invest in a broad range of commodity-linked instruments, including, but not limited to, commodity-linked derivatives (such as commodity-linked swaps, futures, options or options on futures), commodity-linked debt (including leveraged or unleveraged notes that are derivative debt instruments with principal and/or coupon payments linked to the performance of commodities) or commodity-linked ETFs (i.e., ETFs that have their value derived from the price movement of an underlying commodity). The Fund also may invest in equity and fixed-income securities of issuers in commodity-related industries. These investments will not be counted toward the 25% limitation on investments in commodity-linked instruments, but rather will be considered investments in equity securities or fixed-income securities, as appropriate. The Fund expects to obtain its investment exposure to commodity-linked instruments in whole or in significant part indirectly by investing in a wholly-owned subsidiary organized under the laws of the Cayman Islands (the “Commodity Subsidiary”), which is advised by the Adviser and will invest primarily in commodity-linked instruments and fixed-income securities and other investments that serve as collateral for its derivative positions. The Fund may invest up to 25% of its total assets in the Commodity Subsidiary.Derivative Investments. The Fund may invest substantially in a broad range of derivative instruments for both hedging and investment purposes, including, but not limited to, futures contracts (such as futures that provide for physical delivery, treasury futures, single stock futures, and index futures), forward contracts, options (such as options on futures contracts, options on securities, options on securities indices, interest rate/bond options, currency options, options on swaps and exchange-traded and over-the-counter options), warrants (such as index warrants), swap transactions (such as interest rate swaps, total return swaps, index swaps and equity swaps), structured notes, foreign currency transactions, commodity-linked derivatives and credit default swaps. Derivative instruments (such as those listed above) can be used to acquire or to transfer the risk and returns of a security without buying or selling the security. The Fund’s strategy may be highly dependent on the use of derivatives, and to the extent that they become unavailable or unattractive the Fund may be unable to fully implement its investment strategy.The Fund is non-diversified, which means that it is not limited to a percentage of assets that it may invest in any one issuer.The Fund expects to engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance.The percentage limitations set forth herein are not investment restrictions and the Fund may exceed these limits from time to time. In addition, when calculating these exposures, the Fund may use the notional value or an adjusted notional value of a derivative in order to reflect what the Adviser believes to be the most accurate assessment of the Fund’s real economic exposure.Principal RisksThe principal risks of investing in the Fund are summarized below. The Fund does not represent a complete investment program. You may lose money by investing in the Fund.Agency Securities Risk: Agency securities are subject to fixed-income securities risk. Certain debt securities issued or guaranteed by agencies of the U.S. government are guaranteed as to the payment of principal and interest by the relevant entity but have not been backed by the full faith and credit of the U.S. government. Instead, they have been supported only by the discretionary authority of the U.S. government to purchase the agency’s obligations. An event affecting the guaranteeing entity could adversely affect the payment of principal or interest or both on the security and, therefore, these types of securities should be considered to be riskier than U.S. government securities.Below Investment-Grade Fixed-Income Securities Risk: This is the risk that the Fund’s investments in below investment-grade fixed-income securities, also known as “junk bonds,” may be subject to greater risks than other fixed-income securities, including being subject to greater levels of interest rate risk, credit risk (including a greater risk of default) and liquidity risk. The ability of the issuer to make principal and interest payments is predominantly speculative for below investment-grade fixed-income securities.Commodity Risk: This is the risk that exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of physical commodities or commodity-linked derivative instruments may be affected by changes in overall market movements, commodity price volatility, changes in interest rates, currency fluctuations, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in

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Fund Summary commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund.
Commodity Subsidiary Risk: Investing in the Commodity Subsidiary will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments, such as commodity investments risk. The Commodity Subsidiary is not registered under the Investment Company Act of 1940 (the “1940 Act”) and is not subject to all of the investor protections of the 1940 Act. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its shareholders.Credit/Counterparty Risk: Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.Currency Risk: Fluctuations in the exchange rates between different currencies may negatively affect an investment. The Fund may be subject to currency risk because it may invest a significant portion of its assets in currency-related instruments, such as forward currency exchange contracts, foreign currency futures contracts, options on foreign currencies and foreign currency futures, cross-currency instruments (such as swaps) and direct investments in foreign currencies. The Fund also is subject to currency risk because it may invest in securities or other instruments denominated in, or receive revenues in, foreign currencies. The Adviser may elect not to hedge currency risk, which may cause the Fund to incur losses that would not have been incurred had the risk been hedged.Derivatives Risk: Derivatives are subject to changes in the value of the underlying asset or indices on which such transactions are based. There is no guarantee that the use of derivatives will be effective or that suitable transactions will be available. Even a small investment in derivatives may give rise to leverage risk and can have a significant impact on the Fund’s exposure to securities markets values, interest rates or currency exchange rates. It is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. The use of derivatives for other than hedging purposes may be considered a speculative activity, and involves greater risks than are involved in hedging. The Fund’s use of derivatives, such as futures, forward contracts, foreign currency transactions and commodity-linked derivatives involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward contracts and other OTC derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices, liquidity risk, allocation risk and the risk of losing more than the initial margin required to initiate derivatives positions. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. There can be no assurance that the Fund’s derivative counterparties will not experience financial difficulties, possibly resulting in losses to the Fund.Emerging Markets Risk: Investing in emerging markets companies, which may be smaller and have shorter operating histories than companies in developed markets, involves risks in addition to, and greater than, those generally associated with investing in companies in developed foreign markets. The extent of economic development, political stability, market depth, infrastructure, capitalization and regulatory oversight in emerging market economies is generally less than in more developed markets.Equity Securities Risk: You may lose money on your investment due to unpredictable drops in a stock’s value or periods of below-average performance in a given stock or in the stock market as a whole. Rule 144A equity securities may be less liquid than other equity securities. Small-capitalization and emerging growth companies may be subject to more abrupt price movements, limited markets and less liquidity than larger, more established companies, which could adversely affect the value of the Fund’s portfolio.Fixed-Income Securities Risk: Fixed-income securities are subject to credit risk, interest rate risk and liquidity risk. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. You may lose money on your investment due to unpredictable drops in a security’s value or periods of below-average performance in a given security or in the securities market as a whole. In addition, an economic downturn or period of rising interest rates could adversely affect the market of these securities and reduce the Fund’s ability to sell them.Foreign Securities Risk: The Fund’s investments in foreign securities are subject to foreign currency fluctuations. Foreign securities may be subject to higher volatility than U.S. securities, varying degrees of regulation and limited liquidity. Investments in foreign securities may be subject to greater political, economic, environmental, credit and information risks.

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Fund Summary Inflation/Deflation Risk: Inflation risk is the risk that the value of assets or income from investments will be worth less in the future as inflation decreases the present value of future payments. Deflation risk is the risk that prices throughout the economy decline over time (the opposite of inflation). Deflation may have an adverse effect on the creditworthiness of issuers and may make issuer default more likely, which may result in a decline in the value of the Fund’s portfolio. Because the Fund seeks positive returns that exceed the rate of inflation over time, if the portfolio managers’ inflation forecasts are incorrect, the Fund may be more severely impacted than other funds.Interest Rate Risk: Changes in interest rates may cause the value of the Fund’s investments to decrease. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment.Investments in Other Investment Companies Risk: The Fund will indirectly bear the management, service and other fees of the other investment companies in which it invests in addition to its own expenses.Issuer Risk: The value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services.Leverage Risk: Use of derivative instruments may involve leverage. Leverage is the risk associated with securities or practices that multiply small index, market or asset price movements into larger changes in value. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. The use of leverage will increase the impact of gains and losses on the Fund’s returns, and may lead to significant losses if investments are not successful. However, the Adviser will attempt to ensure that at all times, the Fund has sufficient liquid assets to enable it to satisfy its obligations under its derivative contracts.Liquidity Risk: Liquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Illiquid investments also may be difficult to value.Management Risk: A strategy used by the Fund’s portfolio managers may fail to produce the intended result.Market Risk: The market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions. The Fund’s portfolio managers will attempt to reduce this risk by implementing various volatility management strategies and techniques. However, there is no guarantee that such strategies and techniques will produce the intended result.Mortgage-Related and Asset-Backed Securities Risk: In addition to the risks associated with investments in fixed-income securities generally (for example, credit, liquidity and valuation risk), mortgage-related and asset-backed securities are subject to the risks of the mortgages and assets underlying the securities as well as prepayment risk, the risk that the securities may be prepaid and result in the reinvestment of the prepaid amounts in securities with lower yields than the prepaid obligations. Conversely, there is a risk that an unexpected rise in interest rates will extend the life of a mortgage-related or asset-backed security beyond the expected prepayment time, typically reducing the security’s value. The Fund also may incur a loss when there is a prepayment of securities that were purchased at a premium. The Fund’s investments in other asset-backed securities are subject to risks similar to those associated with mortgage-related securities, as well as additional risks associated with the nature of the assets and the servicing of those assets.Non-Diversification Risk: Compared with other mutual funds, the Fund may invest a greater percentage of its assets in a particular issuer and may invest in fewer issuers. Therefore, the Fund may have more risk because changes in the value of a single security or the impact of a simple economic, political or regulatory occurrence may have a greater adverse impact on the Fund’s NAV.Short Exposure Risk: A short exposure through a derivative may present various risks, including credit/counterparty risk and leverage risk. If the value of the asset, asset class or index on which the Fund has obtained a short investment exposure increases, the Fund will incur a loss. Unlike a direct cash investment like a stock, bond or exchange-traded fund, where the potential loss is limited to the purchase price, the potential risk of loss from a short exposure is theoretically unlimited.Risk/Return Bar Chart and TableBecause the Fund has not been in existence for a full calendar year, information related to the Fund’s performance, including a bar chart showing annual returns, has not been included in this Prospectus. The performance information provided by the Fund in the future will give some indication of the risks of an investment in the Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns compare against those of a broad measure of market performance.

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Fund Summary ManagementInvestment AdviserLoomis, Sayles & Company, L.P.Portfolio ManagersKevin Kearns, Vice President of the Adviser, has served as co-portfolio manager of the Fund since September 2010.
David Rolley, Vice President of the Adviser, has served as co-portfolio manager of the Fund since September 2010.Laura Sarlo, Vice President of the Adviser, has served as co-portfolio manager of the Fund since September 2010.
Purchase and Sale of Fund SharesClass Y shares of the Fund may be purchased by the following entities at the following investment minimums.A minimum initial investment of $100,000 and the minimum subsequent investment of $100 for:

• Other mutual funds, endowments, foundations, bank trust departments or trust companies.

There is no initial or subsequent investment minimum for:

• Wrap Fee Programs of certain broker-dealers, the advisers or Natixis Distributors, L.P. (the “Distributor”). Such wrap fee programs may be subject to additional or different conditions, including a wrap account fee. Each broker-dealer is responsible for transmitting to its customer a schedule of fees and other information regarding any such conditions.
• Retirement Plans such as 401(a), 401(k) or 457 plans.
• Certain Individual Retirement Accounts if the amounts invested represent rollover distributions from investments by any of the retirement plans invested in the Fund as set forth above.
• Registered Investment Advisers investing on behalf of clients in exchange for an advisory, management or consulting fee.
• Fund Trustees, former Fund trustees, employees of affiliates of the Natixis Funds and other individuals who are affiliated with any Natixis Fund (this also applies to any spouse, parents, children, siblings, grandparents, grandchildren and in-laws of those mentioned) and Natixis affiliate employee benefit plans.
  

Due to operational limitations at your financial intermediary, certain wrap fee programs, retirement plans, individual retirement accounts and accounts of registered investment advisers may be subject to the investment minimums described above. Please consult your financial representative for more information.At the discretion of Natixis Asset Management Advisors, L.P. (“Natixis Advisors”), clients of Natixis Advisors and its affiliates may purchase Class Y shares of the Fund below the stated minimums.The Fund’s shares are available for purchase (and are redeemable on any business day) through your investment dealer, directly from the Fund by writing to the Fund at Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, by exchange, by wire, by internet at ga.natixis.com, through the Automated Clearing House system, or, in the case of redemptions, by telephone at 800-225-5478 or by the Systematic Withdrawal Plan.Tax InformationFund distributions are generally taxable to you as ordinary income or capital gain, except for distributions to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax law generally.Payments to Broker-Dealers and Other Financial IntermediariesIf you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of the Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

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Investment Goals, Strategies and Risks More Information About the Funds ASG Diversifying Strategies FundInvestment GoalThe Fund pursues an absolute return strategy that seeks to provide capital appreciation. The secondary goal of the Fund is to achieve these returns while maintaining a low or negative correlation over time with the returns of major equity indices. The investment goals are non-fundamental and may be changed without shareholder approval. The Fund will provide 60 days’ prior notice to shareholders before changing the investment goals.Principal Investment StrategiesThe Fund seeks to generate positive absolute returns over time rather than track the performance of any particular index. In selecting investments for the Fund, the Adviser uses multiple quantitative investment models and strategies (for example, relative value fixed income strategies and multi-market trend strategies) each of which has an absolute return objective. Each model and strategy may involve a broad range of market exposures. These models may include, for example, models that base investment decisions on fixed income spreads and models which seek to identify trends across various asset classes. The Adviser uses quantitative and qualitative judgments in the determination of weighting among the models and strategies. Although the Fund seeks positive absolute returns over time, it is likely that the Fund’s investment returns may be volatile over short periods of time. The Fund may outperform the overall securities market during periods of flat or negative market performance and may underperform during periods of strong market performance. There can be no assurance that the Fund’s returns over time or during any period will be positive or that the Fund will outperform the overall security markets over time or during any particular period.Under normal market conditions, the Adviser typically will make extensive use of a variety of derivative instruments, in particular futures and forward contracts, to capture the exposures suggested by its absolute return strategies while also adding value through volatility management and correlation management. These market exposures, which are expected to change over time, may include, for example, exposures to the returns of equity and fixed income securities, currencies and commodities. The Adviser will scale the notional exposure of the Fund’s futures and currency forward positions with the objective of targeting a relatively stable level of annualized volatility for the Fund’s overall portfolio. The Adviser may also use exchange-traded futures contracts on broad U.S. or international equity indices to decrease any undesired correlation with the returns of the major equity indices. The Adviser will have great flexibility to allocate the Fund’s derivatives exposure among various securities, indices, currencies, commodities and other instruments, and the amount of the Fund’s assets that may be allocated to derivative strategies and among these various instruments is expected to vary over time. When buying and selling securities and other instruments for the Fund, and in determining the amount of assets to be allocated to the Money Market Portion (as defined below), the Adviser will also consider the following factors: (i) the Fund’s obligations under its various derivative positions; (ii) redemption requests; (iii) yield management; (iv) credit management and (v) volatility management. The Fund may invest in non-U.S. securities and instruments and securities and instruments traded outside the United States and expects to engage in non-U.S. currency transactions.Under normal market conditions, it is expected that no more than 25% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to the Fund’s derivative transactions. The notional value of the Fund’s derivative investments, however, will generally exceed 25% of the Fund’s total assets. The Fund expects that under normal market conditions it will invest at least 75% of its total assets in money market and other short-term, high quality securities managed by the Subadviser (the “Money Market Portion”), although the Fund may invest less than this percentage. The Adviser will determine the percentage of the Fund’s assets that will be invested in the Money Market Portion at any time. The assets allocated to the Money Market Portion will be used primarily to support the Fund’s investments in derivatives and similar instruments and, secondarily, to provide the Fund with incremental income and liquidity. Although the Fund will invest a significant portion of its assets in money market instruments, the Fund is not a “money market” fund and the value of the Money Market Portion as well as the value of the Fund’s shares may decrease. The Fund is not subject to the portfolio quality, maturity and net asset value requirements applicable to money market funds, and the Fund will not seek to maintain a stable net asset value.The Subadviser will only invest the assets of the Money Market Portion in high quality securities which are denominated in U.S. dollars, and will select securities for investment based on various factors, including the security’s maturity and rating. The Subadviser will invest primarily in (i) short-term obligations issued or guaranteed by the United States government, its agencies or instrumentalities (“U.S. Government Obligations”); (ii) securities issued by foreign governments, their political subdivisions, agencies or instrumentalities; (iii) certificates of deposit, time deposits and bankers’ acceptances issued by domestic banks, foreign branches of domestic banks, foreign subsidiaries of domestic banks, and domestic and foreign branches of foreign banks; (iv) variable amount master demand notes; (v) participation interests in loans extended by banks to companies; (vi) commercial paper or similar debt obligations; and (vii) repurchase agreements.

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Investment Goals, Strategies and Risks Although the Fund does not intend to invest in physical commodities directly, the Fund expects to obtain investment exposure to commodity-related derivatives through a wholly-owned subsidiary organized under the laws of the Cayman Islands that will make commodity-related investments. Under normal market conditions, no more than 10% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to these transactions.The Fund will concentrate its investments in the financial services industry, which means it will normally invest at least 25% of its total assets in securities and other obligations (for example, bank certificates of deposit) of issuers in such industry.The Fund may engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance. Due to the short-term nature of the Fund’s investment portfolio, the Fund does not calculate a portfolio turnover rate. The Fund’s trading in derivatives is active and frequent. Active and frequent trading of derivatives, like active and frequent trading of securities, will result in transaction costs which reduce fund returns.The percentage limitations set forth in this prospectus are not investment restrictions and the Fund may exceed these limits from time to time. As a temporary defensive measure, the Fund may hold any portion of its assets in cash (U.S. dollars, foreign currencies or multinational currency units) and/or invest in money market instruments or high quality debt securities and take other defensive positions as the Adviser deems appropriate. The Fund may miss certain investment opportunities if it uses defensive strategies and thus may not achieve its investment goals. Principal Investment RisksThe Fund has principal investment strategies that come with inherent risks. The principal risks of investing in the Fund are summarized in the Fund Summary under “Principal Investment Risks.” The Fund does not represent a complete investment program. The following is a list of risks to which the Fund may be subject because of its investments in various types of securities or engagement in various practices. Because of the Fund’s extensive use of derivative instruments, the Fund will be subject to many of the risks below indirectly through its derivative transactions rather than directly through investment in the actual securities themselves. For example, to the extent the Fund enters into a futures contract on an equity index, the Fund will be subject to “equity securities” risk. Allocation and Correlation RiskThis is the risk that the Adviser’s judgments about, and allocations between, asset classes and market exposures may adversely affect the Fund’s performance. This risk can be increased by the use of derivatives to increase allocations to various market exposures. This is because derivatives can create investment leverage, which will magnify the impact to the Fund of its investment in any underperforming market exposure. In addition, the Adviser’s judgment about the correlation of various market exposures to the returns of major equity indices (and to each other) may be incorrect, adversely affecting performance. This risk may be particularly acute during periods of market turmoil, when previously uncorrelated asset classes and market exposures often become more correlated. There is no guarantee that the Adviser will be successful in managing correlation with major equity indices, and, as a result, the Fund’s returns may be correlated with major equity indices to a greater extent than desired during any period and over time. Furthermore, because the Fund intends to maintain a low to negative correlation to the returns of major equity indices, during periods when returns in such markets increase, the Fund’s returns will not necessarily reflect the increase. Commodity RiskThis is the risk that exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of physical commodities or commodity-linked derivative instruments may be affected by changes in overall market movements, commodity price volatility, changes in interest rates, currency fluctuations or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund. Commodity Subsidiary RiskInvesting in a wholly-owned commodity subsidiary organized under the laws of a non-U.S. jurisdiction, such as the Commodity Subsidiary, will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments. The Commodity Subsidiary is not registered under the 1940 Act, and unless otherwise noted, is not subject to all of the investor protections of the 1940 Act. However, the Commodity Subsidiary is wholly-owned and controlled by the Fund and therefore, is unlikely to take action contrary to the interests of the Fund or its shareholders. In monitoring compliance with its investment restrictions, the Fund will consider the assets of the Commodity Subsidiary to be assets of the Fund. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its

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Investment Goals, Strategies and Risks shareholders. For example, the Cayman Islands do not currently impose any income, corporate or capital gains tax, estate duty, inheritance tax, gift tax or withholding tax on the Commodity Subsidiary. If Cayman Islands law changes such that the Commodity Subsidiary is required to pay Cayman Islands taxes, the Fund’s shareholders may suffer decreased investment returns.Concentrated Investment RiskThe Fund is particularly vulnerable to events affecting companies in the financial services industry because the Fund concentrates its investments in securities and other obligations of issuers in such industry. Examples of risks affecting the financial services industry include changes in governmental regulation, issues relating to the availability and cost of capital, changes in interest rates and/or monetary policy and price competition. In addition, financial services companies are often more highly leveraged than other companies, making them inherently riskier. As a result, the Fund’s shares may rise and fall in value more rapidly and to a greater extent than shares of a fund that does not concentrate or focus in a particular industry or economic sector. The financial services industry has recently experienced high volatility and a number of issuer failures and the value of many of these securities has significantly declined. As a result, the risk associated with investing in the Fund may be increased as compared to a fund that does not concentrate in the financial services industry. Credit/Counterparty Risk
Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments. Foreign securities may be subject to increased credit risk because of the potential difficulties of requiring foreign entities to honor their contractual commitments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.Currency RiskThis is the risk that fluctuations in exchange rates between the U.S. dollar and foreign currencies and between various foreign currencies may cause the value of the Fund’s investments to decline. The market for some (or all) currencies may from time to time have low trading volume and become illiquid, which may prevent the Fund from effecting positions or from promptly liquidating unfavorable positions in such markets, thus subjecting the Fund to substantial losses. Derivatives RiskDerivatives are financial contracts whose value depends upon or is derived from the value of an underlying asset, reference rate or index. Examples of derivatives include futures contracts, swaps and forward transactions. The Fund expects to make extensive use of derivative transactions, and anticipates that the majority of its returns will be attributable to its derivative transactions. Therefore, the performance of the Fund will depend to a great extent on the success of the Adviser’s derivative strategies. This use of derivatives for these purposes entails greater risk than using derivatives solely for hedging purposes, and may be considered a speculative activity. The Fund’s use of derivatives, such as futures, forward contracts, foreign currency transactions and commodity-linked derivatives, involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward currency contracts and other OTC traded derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices and the risk of losing more than the initial margin required to initiate derivatives positions. In addition, although the Adviser will attempt to ensure that at all times the Fund has sufficient liquid assets to cover its obligations under its derivative contracts, these obligations will often be volatile and it is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. Equity Securities RiskThe value of your investment in the Fund is based on the market value (or price) of the securities the Fund holds. You may lose money on your investment due to unpredictable drops in the value of a security or periods of below-average performance in a given stock or the stock market as a whole. The value of the Fund’s investments in equity securities is subject to the risks of unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. The market value of a security can change daily due to political, economic and other events that affect the securities markets generally, as well as those that affect particular companies or governments. These price movements, sometimes called volatility, will vary depending on the types of securities the Fund owns and the markets in which they trade. Historically, the equity markets have moved in cycles, and the value of the Fund’s equity securities may fluctuate drastically from day to day. Individual companies may report poor results or be negatively affected by industry and/or economic trends and developments. The prices of securities issued by such companies may suffer a decline in response to such trends and developments. Equity securities may include common stocks, preferred stocks, warrants, securities

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Investment Goals, Strategies and Risks convertible into common or preferred stocks and other equity-like interests in an entity. Common stocks represent an equity or ownership interest in an issuer. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock. Equity securities may take the form of stock in corporations, real estate investment trusts (“REITs”) or other trusts and other similar securities. Foreign Securities RiskThis is the risk associated with investments in issuers located in foreign countries. The Fund’s investments in foreign securities may experience more rapid and extreme changes in value than investments in securities of U.S. issuers. The securities markets of many foreign countries are relatively small, with a limited number of issuers and a small number of securities. In addition, foreign companies often are not subject to the same degree of regulation as U.S. companies. Reporting, accounting and auditing standards of foreign countries differ, in some cases significantly, from U.S. standards. Nationalization, expropriation or confiscatory taxation, currency blockage, political changes or diplomatic developments can cause the value of the Fund’s non-U.S. investments to decline. In the event of nationalization, expropriation or other confiscation, the Fund could lose its entire foreign investment. Investments in emerging markets may be subject to these risks to a greater extent than those in more developed markets. These risks also apply to securities of foreign issuers traded in the United States or through depositary receipt programs such as American Depositary Receipts. Interest Rate RiskThis is the risk that changes in interest rates will affect the value of the Fund’s investments in fixed-income securities, such as bonds, notes, asset-backed securities and other income-producing securities and derivatives. Fixed-income securities are obligations of the issuer to make payments of principal and/or interest on future dates. Increases in interest rates may cause the value of the Fund’s investments to decline. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment. Generally, the value of fixed-income securities, including short-term fixed-income securities, rises when prevailing interest rates fall and falls when interest rates rise. A significant change in interest rates could cause the Fund’s share price (and the value of your investment) to change. Issuer RiskThe value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services. Leverage RiskThis is the risk associated with securities or practices (e.g., borrowing and the use of certain derivatives) and investment in certain types of derivatives that multiply small index or market movements into larger changes in value. Use of derivative instruments may involve leverage. Leverage magnifies the potential for gain and the risk of loss. As a result, a relatively small decline in the value of the underlying investments could result in a relatively large loss. Although the Adviser will seek to manage the Fund’s risk from the leverage associated with derivative investments by closely monitoring the volatility of such investments, the Adviser may not be successful in this respect. Liquidity RiskLiquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Derivatives and securities that involve substantial interest rate or credit risk tend to involve greater liquidity risk. In addition, liquidity risk tends to increase to the extent the Fund invests in securities whose sale may be restricted by law or by contract, such as Rule 144A securities. Investment in derivatives may be especially illiquid when compared to other securities, especially during periods of market stress. Similarly, the market for money market and similar instruments may become illiquid at certain times. At these times, it may be difficult to sell securities. Illiquid investments also may be difficult to value. Management RiskManagement risk is the risk that the Adviser’s or Subadviser’s investment techniques could fail to achieve the Fund’s objective and could cause your investment in the Fund to lose value. The Fund is subject to management risk because the Fund is actively managed. The Adviser and Subadviser will apply their investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that such decisions will produce the desired results. For example, securities that the Adviser or Subadviser expect to appreciate in value may, in fact, decline. Similarly, in some cases, derivative and other investment techniques may be unavailable or the Adviser or Subadviser may determine not to use them, even under market conditions where their use could have benefited the Fund. The Adviser utilizes various proprietary quantitative models to identify investment opportunities. There is a possibility that one or all of the quantitative models may fail to identify profitable opportunities at any time. Furthermore, they may incorrectly identify opportunities and these misidentified opportunities may lead to substantial losses. The Adviser’s judgments about the weightings among various models and strategies may be incorrect, adversely affecting performance.Market RiskThis is the risk that the value of the Fund’s investments will change as financial markets fluctuate and that prices overall may decline. The value of a company’s securities may fall as a result of factors that directly relate to that company, such as decisions made by its management or lower demand for the company’s products or services. A security’s value also may fall because of factors affecting not just the company, but companies in its industry or in

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Investment Goals, Strategies and Risks a number of different industries, such as increases in production costs. In addition, the value of the Fund’s derivative investments may fall even when the value of the securities markets is rising. The value of a company’s securities also may be affected by changes in financial market conditions, such as changes in interest rates or currency exchange rates. U.S. Government Securities RiskInvestments in certain U.S. government securities may not be supported by the full faith and credit of the U.S. government. Accordingly, no assurance can be given that the U.S. government will provide financial support to U.S. government agencies, instrumentalities or sponsored enterprises if it is not obligated to do so by law. The maximum potential liability of the issuers of some U.S. government securities held by the Fund may greatly exceed their current resources, and it is possible that these issuers will not have the funds to meet their payment obligations in the future. In such a case, the Fund would have to look principally to the agency, instrumentality or sponsored enterprise issuing or guaranteeing the security for ultimate repayment, and the Fund may not be able to assert a claim against the U.S. government itself in the event the agency, instrumentality or sponsored enterprise does not meet its commitment. Concerns about the capacity of the U.S. government to meet its obligations may raise the interest rates payable on its securities, negatively impacting the price of such securities already held by the Fund.Valuation RiskThis is the risk that the Fund has valued certain securities at a price different from the price at which they can be sold. This risk may be especially pronounced for investments, such as derivatives, which may be illiquid or which may become illiquid.

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Investment Goals, Strategies and Risks ASG Global Alternatives Fund Investment Goal The Fund pursues an absolute return strategy that seeks to provide capital appreciation consistent with the risk-return characteristics of a diversified portfolio of hedge funds. The secondary goal of the Fund is to achieve these returns with less volatility than major equity indices. The investment goals are non-fundamental and may be changed without shareholder approval. The Fund will provide 60 days’ prior notice to shareholders before changing the investment goals.Principal Investment Strategies The Fund seeks to achieve long and short exposure to global equity, bond, currency and commodity markets through a wide range of derivative instruments and direct investments. Under normal market conditions, the Adviser typically will make extensive use of derivative instruments, in particular futures and forward contracts on global equity and fixed income securities, securities indices (including both broad- and narrow-based securities indices), currencies, commodities and other instruments. These investments are intended to provide the Fund with risk and return characteristics similar to those of a diversified portfolio of hedge funds.The Fund seeks to generate absolute returns over time rather than track the performance of any particular index of hedge fund returns. In selecting investments for the Fund, the Adviser uses quantitative models to estimate the market exposures that drive the aggregate returns of a diverse set of hedge funds. These market exposures may include, for example, exposures to the returns of stocks, fixed income securities (including U.S. and non-U.S. government securities), currencies and commodities. In estimating these market exposures, the Adviser analyzes the returns of hedge funds included in one or more commercially available databases selected by the Adviser (for example, the Lipper TASS hedge fund database), and seeks to use a variety of derivative instruments to capture such exposures in the aggregate while adding value through dynamic allocation among market exposures and volatility management. The Adviser will have great flexibility to allocate the Fund’s derivatives exposure among various securities, indices, currencies, commodities and other instruments, and the amount of the Fund’s assets that may be allocated to derivative strategies and among these various instruments is expected to vary over time. When buying and selling securities and other instruments for the Fund, and in determining the amount of assets to be allocated to the Money Market Portion (as defined below), the Adviser will also consider the following factors: (i) the Fund’s obligations under its various derivative positions; (ii) redemption requests; (iii) yield management; (iv) credit management and (v) volatility management. The Fund will not invest directly in hedge funds. The Fund may invest in non-U.S. securities and instruments and securities, and instruments traded outside the United States, and expects to engage in non-U.S. currency transactions.Under normal market conditions, it is expected that no more than 25% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to the Fund’s derivative transactions. The notional value of the Fund’s derivative investments, however, will generally exceed 25% of the Fund’s assets. The Fund expects that under normal market conditions it will invest at least 75% of its total assets in money market and other short-term, high quality securities managed by the Subadviser (the “Money Market Portion”), although the Fund may invest less than this percentage. The Adviser will determine the percentage of the Fund’s assets that will be invested in the Money Market Portion at any time. The assets allocated to the Money Market Portion will be used primarily to finance the Fund’s investments in derivatives and similar instruments and, secondarily, to provide the Fund with incremental income and liquidity. Although the Fund will invest a significant portion of its assets in money market instruments, the Fund is not a “money market” fund and the value of the Money Market Portion as well as the value of the Fund’s shares may decrease. The Fund is not subject to the portfolio quality, maturity and net asset value requirements applicable to money market funds, and the Fund will not seek to maintain a stable net asset value.The Subadviser will only invest the assets of the Money Market Portion in high quality securities which are denominated in U.S. dollars, and will select securities for investment based on various factors, including the security’s maturity and rating. The Subadviser will invest primarily in (i) short-term obligations issued or guaranteed by the United States government, its agencies or instrumentalities (“U.S. Government Obligations”); (ii) securities issued by foreign governments, their political subdivisions or agencies or instrumentalities; (iii) certificates of deposit, time deposits and bankers’ acceptances issued by domestic banks, foreign branches of domestic banks, foreign subsidiaries of domestic banks, and domestic and foreign branches of foreign banks; (iv) variable amount master demand notes; (v) participation interests in loans extended by banks to companies; (vi) commercial paper or similar debt obligations; and (vii) repurchase agreements.Although the Fund does not intend to invest in physical commodities directly, the Fund expects to obtain investment exposure to commodity-related derivatives through a wholly-owned subsidiary organized under the laws of the Cayman Islands that will make commodity-related investments. Under normal market conditions, no more than 10% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to these transactions.The Fund will concentrate its investments in the financial services industry, which means it will normally invest at least 25% of its total assets in securities and other obligations (for example, bank certificates of deposit) of issuers in such industry.

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Investment Goals, Strategies and Risks The Fund may engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance. Due to the short-term nature of the Fund’s investment portfolio, the Fund does not calculate a portfolio turnover rate. The Fund’s trading in derivatives is active and frequent. Active and frequent trading of derivatives, like active and frequent trading of securities, will result in transaction costs which reduce fund returns.The percentage limitations set forth in this prospectus are not investment restrictions and the Fund may exceed these limits from time to time. As a temporary defensive measure, the Fund may hold any portion of its assets in cash (U.S. dollars, foreign currencies or multinational currency units) and/or invest in money market instruments or high quality debt securities and take other defensive positions as the Adviser deems appropriate. The Fund may miss certain investment opportunities if it uses defensive strategies and thus may not achieve its investment goals. Principal Investment RisksThe Fund has principal investment strategies that come with inherent risks. The principal risks of investing in the Fund are summarized in the Fund Summary under “Principal Investment Risks.” The Fund does not represent a complete investment program. The following is a list of risks to which the Fund may be subject because of its investments in various types of securities or engagement in various practices. Because of the Fund’s extensive use of derivative instruments, the Fund will be subject to many of the risks below indirectly through its derivative transactions rather than directly through investment in the actual securities themselves. For example, to the extent the Fund enters into a futures contract on an equity index, the Fund will be subject to “equity securities” risk. Commodity RiskThis is the risk that exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of physical commodities or commodity-linked derivative instruments may be affected by changes in overall market movements, commodity price volatility, changes in interest rates, currency fluctuations or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund. Commodity Subsidiary RiskInvesting in a wholly-owned commodity subsidiary organized under the laws of a non-U.S. jurisdiction, such as the Commodity Subsidiary, will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments. The Commodity Subsidiary is not registered under the 1940 Act, and unless otherwise noted, is not subject to all of the investor protections of the 1940 Act. However, the Commodity Subsidiary is wholly-owned and controlled by the Fund and therefore, is unlikely to take action contrary to the interests of the Fund or its shareholders. In monitoring compliance with its investment restrictions, the Fund will consider the assets of the Commodity Subsidiary to be assets of the Fund. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its shareholders. For example, the Cayman Islands do not currently impose any income, corporate or capital gains tax, estate duty, inheritance tax, gift tax or withholding tax on the Commodity Subsidiary. If Cayman Islands law changes such that the Commodity Subsidiary is required to pay Cayman Islands taxes, the Fund’s shareholders may suffer decreased investment returns.Concentrated Investment RiskThe Fund is particularly vulnerable to events affecting companies in the financial services industry because the Fund concentrates its investments in securities and other obligations of issuers in such industry. Examples of risks affecting the financial services industry include changes in governmental regulation, issues relating to the availability and cost of capital, changes in interest rates and/or monetary policy and price competition. In addition, financial services companies are often more highly leveraged than other companies, making them inherently riskier. As a result, the Fund’s shares may rise and fall in value more rapidly and to a greater extent than shares of a fund that does not concentrate or focus in a particular industry or economic sector. The financial services industry has recently experienced high volatility and a number of issuer failures and the value of many of these securities has significantly declined. As a result, the risk associated with investing in the Fund may be increased as compared to a fund that does not concentrate in the financial services industry. Credit/Counterparty Risk
Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments. Foreign securities may be subject to increased credit risk because of the potential difficulties of requiring foreign entities to honor their contractual commitments.

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Investment Goals, Strategies and Risks The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.Currency RiskThis is the risk that fluctuations in exchange rates between the U.S. dollar and foreign currencies and between various foreign currencies may cause the value of the Fund’s investments to decline. The market for some (or all) currencies may from time to time have low trading volume and become illiquid, which may prevent the Fund from effecting positions or from promptly liquidating unfavorable positions in such markets, thus subjecting the Fund to substantial losses. Derivatives RiskDerivatives are financial contracts whose value depends upon or is derived from the value of an underlying asset, reference rate or index. Examples of derivatives include futures contracts, swaps and forward transactions. The Fund expects to make extensive use of derivative transactions, and anticipates that the majority of its returns will be attributable to its derivative transactions. Therefore, the performance of the Fund will depend to a great extent on the success of the Adviser’s derivative strategies. This use of derivatives for these purposes entails greater risk than using derivatives solely for hedging purposes, and may be considered a speculative activity. The Fund’s use of derivatives, such as futures, forward contracts, foreign currency transactions and commodity-linked derivatives, involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward currency contracts and other OTC traded derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices and the risk of losing more than the initial margin required to initiate derivatives positions. In addition, although the Adviser will attempt to ensure that at all times the Fund has sufficient liquid assets to cover its obligations under its derivative contracts, these obligations will often be volatile and it is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. Equity Securities RiskThe value of your investment in the Fund is based on the market value (or price) of the securities the Fund holds. You may lose money on your investment due to unpredictable drops in the value of a security or periods of below-average performance in a given stock or the stock market as a whole. The value of the Fund’s investments in equity securities is subject to the risks of unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. The market value of a security can change daily due to political, economic and other events that affect the securities markets generally, as well as those that affect particular companies or governments. These price movements, sometimes called volatility, will vary depending on the types of securities the Fund owns and the markets in which they trade. Historically, the equity markets have moved in cycles, and the value of the Fund’s equity securities may fluctuate drastically from day to day. Individual companies may report poor results or be negatively affected by industry and/or economic trends and developments. The prices of securities issued by such companies may suffer a decline in response to such trends and developments. Equity securities may include common stocks, preferred stocks, warrants, securities convertible into common or preferred stocks and other equity-like interests in an entity. Common stocks represent an equity or ownership interest in an issuer. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock. Equity securities may take the form of stock in corporations, real estate investment trusts (“REITs”) or other trusts and other similar securities. Foreign Securities RiskThis is the risk associated with investments in issuers located in foreign countries. The Fund’s investments in foreign securities may experience more rapid and extreme changes in value than investments in securities of U.S. issuers. The securities markets of many foreign countries are relatively small, with a limited number of issuers and a small number of securities. In addition, foreign companies often are not subject to the same degree of regulation as U.S. companies. Reporting, accounting and auditing standards of foreign countries differ, in some cases significantly, from U.S. standards. Nationalization, expropriation or confiscatory taxation, currency blockage, political changes or diplomatic developments can cause the value of the Fund’s non-U.S. investments to decline. In the event of nationalization, expropriation or other confiscation, the Fund could lose its entire foreign investment. Investments in emerging markets may be subject to these risks to a greater extent than those in more developed markets. These risks also apply to securities of foreign issuers traded in the United States or through depositary receipt programs such as American Depositary Receipts.

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Investment Goals, Strategies and Risks Hedge Fund RiskHedge funds are typically unregulated private investment pools available only to sophisticated investors. They are often illiquid and highly leveraged. Although the Fund will not invest directly in hedge funds, because the Fund’s investments are intended to provide exposure to the factors that drive hedge fund returns, an investment in the Fund will be subject to many of the same risks associated with an investment in a diversified portfolio of hedge funds. Therefore, the Fund’s performance may be lower than the returns of the broader stock market and the Fund’s net asset value may fluctuate substantially over time. Index/Tracking Error Risk Although the Fund does not seek to track any particular index, the Fund seeks to analyze the factors that drive hedge fund returns, as determined by reference to one or more indices. These indices may not provide an accurate representation of hedge fund returns generally, and the Adviser’s strategy may not successfully identify or be able to replicate factors that drive returns. There is a risk that hedge fund return data provided by third party hedge fund index providers may be inaccurate or may not accurately reflect hedge fund returns due to survivorship bias, self-reporting bias or other biases. Even if an index does provide an accurate representation of hedge fund returns generally, the Fund’s performance may not match the returns of any such index during any period of time. For example, the Fund’s returns may differ from the returns of an index because of the inability of the Fund’s managers to replicate hedge fund returns (which are based on many different types of assets, including illiquid assets, that may not be available for investment by the Fund) using futures and forward contracts and because of differences in volatility between the Fund’s portfolio and the returns of the index. In addition, unlike an index, the Fund will be subject to a management fee and other Fund-level expenses. Therefore, the returns of the Fund may differ significantly from returns of hedge funds generally, or the returns of any particular index. Interest Rate RiskThis is the risk that changes in interest rates will affect the value of the Fund’s investments in fixed-income securities, such as bonds, notes, asset-backed securities and other income-producing securities and derivatives. Fixed-income securities are obligations of the issuer to make payments of principal and/or interest on future dates. Increases in interest rates may cause the value of the Fund’s investments to decline. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment. Generally, the value of fixed-income securities, including short-term fixed-income securities, rises when prevailing interest rates fall and falls when interest rates rise. A significant change in interest rates could cause the Fund’s share price (and the value of your investment) to change. Issuer RiskThe value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services. Leverage RiskThis is the risk associated with securities or practices (e.g., borrowing and the use of certain derivatives) and investment in certain types of derivatives that multiply small index or market movements into larger changes in value. Use of derivative instruments may involve leverage. Leverage magnifies the potential for gain and the risk of loss. As a result, a relatively small decline in the value of the underlying investments could result in a relatively large loss. Although the Adviser will seek to manage the Fund’s risk from the leverage associated with derivative investments by closely monitoring the volatility of such investments, the Adviser may not be successful in this respect. Liquidity RiskLiquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Derivatives and securities that involve substantial interest rate or credit risk tend to involve greater liquidity risk. In addition, liquidity risk tends to increase to the extent the Fund invests in securities whose sale may be restricted by law or by contract, such as Rule 144A securities. Investment in derivatives may be especially illiquid when compared to other securities, especially during periods of market stress. Similarly, the market for money market and similar instruments may become illiquid at certain times. At these times, it may be difficult to sell securities. Illiquid investments also may be difficult to value. Management RiskManagement risk is the risk that the Adviser’s or Subadviser’s investment techniques could fail to achieve the Fund’s objective and could cause your investment in the Fund to lose value. The Fund is subject to management risk because the Fund is actively managed. The Adviser and Subadviser will apply their investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that such decisions will produce the desired results. For example, securities that the Adviser or Subadviser expect to appreciate in value may, in fact, decline. Similarly, in some cases, derivative and other investment techniques may be unavailable or the Adviser or Subadviser may determine not to use them, even under market conditions where their use could have benefited the Fund. The Adviser utilizes various proprietary quantitative models to identify investment opportunities. There is a possibility that one or all of the quantitative models may fail to identify profitable opportunities at any time. Furthermore, they may incorrectly identify opportunities and these misidentified opportunities may lead to substantial losses. The Adviser’s judgments about the weightings among various models and strategies may be incorrect, adversely affecting performance.

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Investment Goals, Strategies and Risks Market RiskThis is the risk that the value of the Fund’s investments will change as financial markets fluctuate and that prices overall may decline. The value of a company’s securities may fall as a result of factors that directly relate to that company, such as decisions made by its management or lower demand for the company’s products or services. A security’s value also may fall because of factors affecting not just the company, but companies in its industry or in a number of different industries, such as increases in production costs. In addition, the value of the Fund’s derivative investments may fall even when the value of the securities markets is rising. The value of a company’s securities also may be affected by changes in financial market conditions, such as changes in interest rates or currency exchange rates. U.S. Government Securities RiskInvestments in certain U.S. government securities may not be supported by the full faith and credit of the U.S. government. Accordingly, no assurance can be given that the U.S. government will provide financial support to U.S. government agencies, instrumentalities or sponsored enterprises if it is not obligated to do so by law. The maximum potential liability of the issuers of some U.S. government securities held by the Fund may greatly exceed their current resources, and it is possible that these issuers will not have the funds to meet their payment obligations in the future. In such a case, the Fund would have to look principally to the agency, instrumentality or sponsored enterprise issuing or guaranteeing the security for ultimate repayment, and the Fund may not be able to assert a claim against the U.S. government itself in the event the agency, instrumentality or sponsored enterprise does not meet its commitment. Concerns about the capacity of the U.S. government to meet its obligations may raise the interest rates payable on its securities, negatively impacting the price of such securities already held by the Fund.Valuation RiskThis is the risk that the Fund has valued certain securities at a price different from the price at which they can be sold. This risk may be especially pronounced for investments, such as derivatives, which may be illiquid or which may become illiquid.

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Investment Goals, Strategies and Risks ASG Managed Futures Strategy Fund Investment Goal The Fund pursues an absolute return strategy that seeks to provide capital appreciation. The investment goal is non-fundamental and may be changed without shareholder approval. The Fund will provide 60 days’ prior notice to shareholders before changing the investment goals.Principal Investment Strategies The Fund seeks to generate positive absolute returns over time. Under normal market conditions, AlphaSimplex typically will make extensive use of a variety of derivative instruments, including futures and forward contracts, to capture the exposures suggested by its absolute return strategy while also seeking to add value through volatility management. These market exposures, which are expected to change over time, may include, for example, exposures to the returns of U.S. and non-U.S. equity and fixed income securities indices (including both broad- and narrow-based securities indices), currencies and commodities. AlphaSimplex uses a proprietary quantitative model to identify price trends within multiple asset classes across time periods of various lengths. AlphaSimplex believes that asset prices may show persistent trending behavior due to a number of behavioral biases among market participants as well as certain risk-management policies that will identify assets to purchase in upward-trending markets and identify assets to sell in downward-trending markets. AlphaSimplex believes that following trends across a widely diversified set of assets, combined with sophisticated risk management, may allow it to earn a positive expected return over time. The Fund may have both “short” and “long” exposures within an asset class based upon AlphaSimplex’s analysis of multiple time horizons to identify trends in a particular asset class. A “short” exposure will benefit when the underlying asset class decreases in price. A “long” exposure will benefit when the underlying asset class increases in price. AlphaSimplex will scale the notional exposure of the Fund’s futures and currency forward positions with the objective of targeting a relatively stable level of annualized volatility for the Fund’s overall portfolio. AlphaSimplex will have great flexibility to allocate the Fund’s derivatives exposure among various securities, indices, currencies, commodities and other instruments, and the amount of the Fund’s assets that may be allocated to derivative strategies and among these various instruments is expected to vary over time.Under normal market conditions, it is expected that no more than 25% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to the Fund’s derivative transactions. The notional value of the Fund’s derivative investments, however, will generally exceed 25% of the Fund’s total assets. The Fund expects that under normal market conditions it will invest at least 75% of its total assets in money market and other short-term, high quality securities (such as bankers’ acceptances, certificates of deposit, commercial paper, loan participations, repurchase agreements and time deposits) managed by Reich & Tang, although the Fund may invest less than this percentage. The assets allocated to the Money Market Portion will be used primarily to support the Fund’s investments in derivatives and, secondarily, to provide the Fund with incremental income and liquidity. Although the Fund will invest a significant portion of its assets in money market instruments, the Fund is not a “money market” fund and the value of the Money Market Portion as well as the value of the Fund’s shares may decrease. The Fund will concentrate its investments in the financial services industry, which means it will normally invest at least 25% of its total assets in securities and other obligations (for example, bank certificates of deposit, repurchase agreements and time deposits) of issuers in such industry.Reich & Tang will only invest the assets of the Money Market Portion in high quality securities which are denominated in U.S. dollars, and will select securities for investment based on various factors, including the security’s maturity and rating. Reich & Tang will invest primarily in (i) short-term obligations issued or guaranteed by the United States government, its agencies or instrumentalities (“U.S. Government Obligations”); (ii) securities issued by foreign governments, their political subdivisions, agencies or instrumentalities; (iii) certificates of deposit, time deposits and bankers’ acceptances issued by domestic banks, foreign branches of domestic banks, foreign subsidiaries of domestic banks and domestic and foreign branches of foreign banks; (iv) variable amount master demand notes; (v) participation interests in loans extended by banks to companies; (vi) commercial paper or similar debt obligations; and (vii) repurchase agreements.Although the Fund does not intend to invest in physical commodities directly, the Fund expects to obtain investment exposure to commodities and commodity-related derivatives through its investments in the Commodity Subsidiary, which will make commodity-related investments. Under normal market conditions, no more than 10% of the Fund’s total assets will be dedicated to initial and variation margin payments relating to these transactions.Although the Fund seeks positive absolute returns over time, it is likely that the Fund’s investment returns may be volatile over short periods of time. The Fund may outperform the overall securities market during periods of flat or negative market performance and may underperform during periods of strong market performance. There can be no assurance that the Fund’s returns over time or during any period will be positive or that the Fund will outperform the overall security markets over time or during any particular period.The Fund may engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance. Due to the short-term nature of the Fund’s investment portfolio, the Fund does not calculate a portfolio turnover rate. The Fund’s trading in derivatives is active and frequent. Active and frequent trading of derivatives, like active and frequent trading of securities, will result in transaction costs which reduce fund returns.

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Investment Goals, Strategies and Risks The percentage limitations set forth herein are not investment restrictions and the Fund may exceed these limits from time to time. As a temporary defensive measure, the Fund may hold any portion of its assets in cash (U.S. dollars, foreign currencies or multinational currency units) and/or invest in money market instruments or high quality debt securities and take other defensive positions as AlphaSimplex deems appropriate. The Fund may miss certain investment opportunities if it uses defensive strategies and thus may not achieve its investment goals. Principal Investment RisksThe Fund has principal investment strategies that come with inherent risks. The principal risks of investing in the Fund are summarized in the Fund Summary under “Principal Investment Risks.” The Fund does not represent a complete investment program. The following is a list of risks to which the Fund may be subject because of its investments in various types of securities or engagement in various practices. Because of the Fund’s extensive use of derivative instruments, the Fund will be subject to many of the risks below indirectly through its derivative transactions rather than directly through investment in the actual securities themselves. For example, to the extent the Fund enters into a futures contract on an equity index, the Fund will be subject to “equity securities” risk. Commodity RiskThis is the risk that exposure to the commodities markets may subject the Fund to greater volatility than investments in traditional securities. The value of physical commodities or commodity-linked derivative instruments may be affected by changes in overall market movements, commodity price volatility, changes in interest rates, currency fluctuations or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund. Commodity Subsidiary RiskInvesting in a wholly-owned commodity subsidiary organized under the laws of a non-U.S. jurisdiction, such as the Commodity Subsidiary, will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments. The Commodity Subsidiary is not registered under the 1940 Act, and unless otherwise noted, is not subject to all of the investor protections of the 1940 Act. However, the Commodity Subsidiary is wholly-owned and controlled by the Fund and therefore, is unlikely to take action contrary to the interests of the Fund or its shareholders. In monitoring compliance with its investment restrictions, the Fund will consider the assets of the Commodity Subsidiary to be assets of the Fund. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its shareholders. For example, the Cayman Islands do not currently impose any income, corporate or capital gains tax, estate duty, inheritance tax, gift tax or withholding tax on the Commodity Subsidiary. If Cayman Islands law changes such that the Commodity Subsidiary is required to pay Cayman Islands taxes, the Fund’s shareholders may suffer decreased investment returns.Concentrated Investment RiskThe Fund is particularly vulnerable to events affecting companies in the financial services industry because the Fund concentrates its investments in securities and other obligations of issuers in such industry. Examples of risks affecting the financial services industry include changes in governmental regulation, issues relating to the availability and cost of capital, changes in interest rates and/or monetary policy and price competition. In addition, financial services companies are often more highly leveraged than other companies, making them inherently riskier. As a result, the Fund’s shares may rise and fall in value more rapidly and to a greater extent than shares of a fund that does not concentrate or focus in a particular industry or economic sector. The financial services industry has recently experienced high volatility and a number of issuer failures and the value of many of these securities has significantly declined. As a result, the risk associated with investing in the Fund may be increased as compared to a fund that does not concentrate in the financial services industry. Credit/Counterparty Risk
Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments. Foreign securities may be subject to increased credit risk because of the potential difficulties of requiring foreign entities to honor their contractual commitments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains.

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Investment Goals, Strategies and Risks Currency RiskThis is the risk that fluctuations in exchange rates between the U.S. dollar and foreign currencies and between various foreign currencies may cause the value of the Fund’s investments to decline. The market for some (or all) currencies may from time to time have low trading volume and become illiquid, which may prevent the Fund from effecting positions or from promptly liquidating unfavorable positions in such markets, thus subjecting the Fund to substantial losses. Derivatives RiskDerivatives are financial contracts whose value depends upon or is derived from the value of an underlying asset, reference rate or index. Examples of derivatives include futures contracts, swaps and forward transactions. The Fund expects to make extensive use of derivative transactions, and anticipates that the majority of its returns will be attributable to its derivative transactions. Therefore, the performance of the Fund will depend to a great extent on the success of the Adviser’s derivative strategies. This use of derivatives for these purposes entails greater risk than using derivatives solely for hedging purposes, and may be considered a speculative activity. The Fund’s use of derivatives, such as futures, forward contracts, foreign currency transactions and commodity-linked derivatives, involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward currency contracts and other OTC traded derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices and the risk of losing more than the initial margin required to initiate derivatives positions. In addition, although the Adviser will attempt to ensure that at all times the Fund has sufficient liquid assets to cover its obligations under its derivative contracts, these obligations will often be volatile and it is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. Equity Securities RiskThe value of your investment in the Fund is based on the market value (or price) of the securities the Fund holds. You may lose money on your investment due to unpredictable drops in the value of a security or periods of below-average performance in a given stock or the stock market as a whole. The value of the Fund’s investments in equity securities is subject to the risks of unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. The market value of a security can change daily due to political, economic and other events that affect the securities markets generally, as well as those that affect particular companies or governments. These price movements, sometimes called volatility, will vary depending on the types of securities the Fund owns and the markets in which they trade. Historically, the equity markets have moved in cycles, and the value of the Fund’s equity securities may fluctuate drastically from day to day. Individual companies may report poor results or be negatively affected by industry and/or economic trends and developments. The prices of securities issued by such companies may suffer a decline in response to such trends and developments. Equity securities may include common stocks, preferred stocks, warrants, securities convertible into common or preferred stocks and other equity-like interests in an entity. Common stocks represent an equity or ownership interest in an issuer. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock. Equity securities may take the form of stock in corporations, real estate investment trusts (“REITs”) or other trusts and other similar securities. Foreign Securities RiskThis is the risk associated with investments in issuers located in foreign countries. The Fund’s investments in foreign securities may experience more rapid and extreme changes in value than investments in securities of U.S. issuers. The securities markets of many foreign countries are relatively small, with a limited number of issuers and a small number of securities. In addition, foreign companies often are not subject to the same degree of regulation as U.S. companies. Reporting, accounting and auditing standards of foreign countries differ, in some cases significantly, from U.S. standards. Nationalization, expropriation or confiscatory taxation, currency blockage, political changes or diplomatic developments can cause the value of the Fund’s non-U.S. investments to decline. In the event of nationalization, expropriation or other confiscation, the Fund could lose its entire foreign investment. Investments in emerging markets may be subject to these risks to a greater extent than those in more developed markets. These risks also apply to securities of foreign issuers traded in the United States or through depositary receipt programs such as American Depositary Receipts. Interest Rate RiskThis is the risk that changes in interest rates will affect the value of the Fund’s investments in fixed-income securities, such as bonds, notes, asset-backed securities and other income-producing securities and derivatives. Fixed-income securities are obligations of the issuer to make payments of principal and/or interest on future dates. Increases in interest rates may cause the value of the Fund’s investments to decline. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment. Generally, the value of fixed-income securities, including short-term fixed-income securities, rises when prevailing interest rates fall and falls when interest rates rise. A significant change in interest rates could cause the Fund’s share price (and the value of your investment) to change.

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Investment Goals, Strategies and Risks Issuer RiskThe value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services. Leverage RiskThis is the risk associated with securities or practices (e.g., borrowing and the use of certain derivatives) and investment in certain types of derivatives that multiply small index or market movements into larger changes in value. Use of derivative instruments may involve leverage. Leverage magnifies the potential for gain and the risk of loss. As a result, a relatively small decline in the value of the underlying investments could result in a relatively large loss. Although the Adviser will seek to manage the Fund’s risk from the leverage associated with derivative investments by closely monitoring the volatility of such investments, the Adviser may not be successful in this respect. Liquidity RiskLiquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Derivatives and securities that involve substantial interest rate or credit risk tend to involve greater liquidity risk. In addition, liquidity risk tends to increase to the extent the Fund invests in securities whose sale may be restricted by law or by contract, such as Rule 144A securities. Investment in derivatives may be especially illiquid when compared to other securities, especially during periods of market stress. Similarly, the market for money market and similar instruments may become illiquid at certain times. At these times, it may be difficult to sell securities. Illiquid investments also may be difficult to value. Management RiskManagement risk is the risk that the Adviser’s or Subadviser’s investment techniques could fail to achieve the Fund’s objective and could cause your investment in the Fund to lose value. The Fund is subject to management risk because the Fund is actively managed. The Adviser and Subadviser will apply their investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that such decisions will produce the desired results. For example, securities that the Adviser or Subadviser expect to appreciate in value may, in fact, decline. Similarly, in some cases, derivative and other investment techniques may be unavailable or the Adviser or Subadviser may determine not to use them, even under market conditions where their use could have benefited the Fund. The Adviser utilizes various proprietary quantitative models to identify investment opportunities. There is a possibility that one or all of the quantitative models may fail to identify profitable opportunities at any time. Furthermore, they may incorrectly identify opportunities and these misidentified opportunities may lead to substantial losses. The Adviser’s judgments about the weightings among various models and strategies may be incorrect, adversely affecting performance.Market RiskThis is the risk that the value of the Fund’s investments will change as financial markets fluctuate and that prices overall may decline. The value of a company’s securities may fall as a result of factors that directly relate to that company, such as decisions made by its management or lower demand for the company’s products or services. A security’s value also may fall because of factors affecting not just the company, but companies in its industry or in a number of different industries, such as increases in production costs. In addition, the value of the Fund’s derivative investments may fall even when the value of the securities markets is rising. The value of a company’s securities also may be affected by changes in financial market conditions, such as changes in interest rates or currency exchange rates. Mortgage-Related and Asset-Backed Securities Risk Mortgage-related securities, such as Government National Mortgage Association certificates or securities issued by the Federal National Mortgage Association, differ from traditional fixed-income securities. Among the major differences are that interest and principal payments are made more frequently, usually monthly, and that principal may be prepaid at any time because the underlying mortgage loans generally may be prepaid at any time. As a result, if the Fund purchases these assets at a premium, a faster-than-expected prepayment rate will reduce yield to maturity, and a slower-than-expected prepayment rate will increase yield to maturity. If the Fund purchases mortgage-related securities at a discount, faster-than-expected prepayments will increase, and slower-than-expected prepayments will reduce, yield to maturity. Prepayments, and resulting amounts available for reinvestment by the Fund, are likely to be greater during a period of declining interest rates and, as a result, are likely to be reinvested at lower interest rates. Accelerated prepayments on securities purchased at a premium may result in a loss of principal if the premium has not been fully amortized at the time of prepayment. These securities will generally decrease in value as a result of increases in interest rates, and they are likely to appreciate less than other fixed-income securities when interest rates decline because of the risk of prepayments.The market for mortgage-backed securities (and other asset-backed securities) has experienced high volatility and a lack of liquidity. As a result, the value of many of these securities has significantly declined. There can be no assurance that these markets will become more liquid or less volatile, and it is possible that the value of these securities could decline further. The Fund’s investments in other asset-backed securities are subject to risks similar to those associated with mortgage-related securities, as well as additional risks associated with the nature of the assets and the servicing of those assets.

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Investment Goals, Strategies and Risks U.S. Government Securities RiskInvestments in certain U.S. government securities may not be supported by the full faith and credit of the U.S. government. Accordingly, no assurance can be given that the U.S. government will provide financial support to U.S. government agencies, instrumentalities or sponsored enterprises if it is not obligated to do so by law. The maximum potential liability of the issuers of some U.S. government securities held by the Fund may greatly exceed their current resources, and it is possible that these issuers will not have the funds to meet their payment obligations in the future. In such a case, the Fund would have to look principally to the agency, instrumentality or sponsored enterprise issuing or guaranteeing the security for ultimate repayment, and the Fund may not be able to assert a claim against the U.S. government itself in the event the agency, instrumentality or sponsored enterprise does not meet its commitment. Concerns about the capacity of the U.S. government to meet its obligations may raise the interest rates payable on its securities, negatively impacting the price of such securities already held by the Fund.Valuation RiskThis is the risk that the Fund has valued certain securities at a price different from the price at which they can be sold. This risk may be especially pronounced for investments, such as derivatives, which may be illiquid or which may become illiquid.

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Investment Goal, Strategies and Risks Gateway FundInvestment GoalThe Fund seeks to capture the majority of the returns associated with equity market investments, while exposing investors to less risk than other equity investments. The Fund’s investment objective is non-fundamental, which means that it may be changed without shareholder approval. The Fund will provide 60 days’ prior written notice to shareholders before changing the investment goal.Principal Investment Strategies Under normal circumstances, the Fund invests in a broadly diversified portfolio of common stocks, while also selling index call options and purchasing index put options. Writing index call options reduces the Fund’s volatility, provides steady cash flow and is an important source of the Fund’s return, although it also reduces the Fund’s ability to profit from increases in the value of its equity portfolio. The Fund also buys index put options, which can protect the Fund from a significant market decline that may occur over a short period of time. The value of an index put option generally increases as the prices of the stocks constituting the index decrease, and decreases as those stocks increase in price. The combination of the diversified stock portfolio, the steady cash flow from the sale of index call options and the downside protection from index put options is intended to provide the Fund with the majority of the returns associated with equity market investments while exposing investors to less risk than other equity investments. The Fund may invest in companies with small, medium or large market capitalizations. Equity securities purchased by the Fund may include U.S. exchange-listed common stocks, ADRs, which are securities issued by a U.S. bank that represent interests in foreign equity securities, and interests in REITs.The Fund not only strives for the majority of the returns associated with equity market investments, but also returns in excess of those available from other investments comparable in volatility. Because, as described above, the Fund writes index call options and purchases index put options in addition to investing in equity securities, the Fund’s historical volatility has been closer to intermediate-to long-term fixed income investments (intermediate-term are those with approximately five-year maturities and long-term are those with maturities of ten or more years) and hybrid investments (blends of equity and short-term fixed income securities) than to equity investments. With its core investment in equities, the Fund is significantly less vulnerable to fluctuations in value caused by interest rate volatility, a risk factor present in both fixed income and “hybrid investments” (blends of equity and short-term fixed income), although the Fund expects to generally have lower long-term returns than a fund consisting solely of equity securities. The Fund intends that its index option-based risk management strategy will reduce the volatility inherent in equities while sacrificing less of the higher equity returns than hybrid investments. Thus, the Fund seeks to provide an efficient trade-off between risk and reward where risk is characterized by volatility or fluctuations in value over time.The Fund’s investment strategies are described in more detail below.Purchasing StocksThe Fund invests in a diversified stock portfolio, generally consisting of approximately 200 to 400 stocks, designed to support the Fund’s index option-based risk management strategy as efficiently as possible while seeking to enhance the Fund’s total return. The Adviser uses a multi-factor quantitative model to construct the stock portfolio. The model evaluates approximately 9,000 equity securities to construct a portfolio of U.S.-exchange-traded equities that meets criteria and constraints established by the Adviser. Generally, the Adviser tries to minimize the difference between the performance of the stock portfolio and that of the index or indexes underlying the Fund’s option strategies while also considering other factors, such as predicted dividend yield. The Adviser monitors this difference and the other factors, and rebalances and adjusts the stock portfolio from time to time, by purchasing and selling stocks. The Adviser expects the portfolio to generally represent the broad U.S. equity market.Writing Index Call OptionsThe Fund continuously writes index call options, typically on broad-based securities market indices, on the full value of its broadly diversified stock portfolio. As the seller of the index call option, the Fund receives cash (the “premium”) from the purchaser. The purchaser of an index call option has the right to any appreciation in the value of the index over a fixed price (the “exercise price”) on a certain date in the future (the “expiration date”). If the purchaser does not exercise the option, the Fund retains the premium. If the purchaser exercises the option, the Fund pays the purchaser the difference between the value of the index and the exercise price of the option. The premium, the exercise price and the value of the index determine the gain or loss realized by the Fund as the seller of the index call option. The Fund can also repurchase the call option prior to the expiration date, ending its obligation. In this case, the difference between the cost of repurchasing the option and the premium received will determine the gain or loss realized by the Fund.Purchasing Index Put OptionsThe Fund may buy index put options in an attempt to protect the Fund from a significant market decline that may occur over a short period of time. The value of an index put option generally increases as stock prices (and the value of the index) decrease and decreases as those stocks (and the index) increase in price. The Fund may not spend at any time more than 5% of its assets to purchase index put options.

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Investment Goal, Strategies and Risks Other InvestmentsThe Fund may invest in foreign securities traded in U.S. markets (through ADRs or stocks traded in U.S. dollars). The Fund may also invest in other investment companies, including money market funds, to the extent permitted by the the 1940 Act. The Fund may enter into repurchase agreements and/or hold cash and cash equivalents.Temporary Defensive MeasureAs a temporary defensive measure, the Fund may purchase U.S. government securities, certificates of deposit, commercial paper, bankers’ acceptance, and/or repurchase agreements or hold cash (U.S. dollars, foreign currencies or multinational currency units) for temporary defensive purposes in response to adverse market, economic or political conditions, or, under normal circumstances, for purposes of liquidity. These investments may prevent the Fund from achieving its investment objective. Principal Investment RisksThe Fund has principal investment strategies that come with inherent risks. The principal risks of investing in the Fund are summarized in the Fund Summary under “Principal Investment Risks.” The Fund does not represent a complete investment program. The following is a list of the risks to which the Fund may be subject because of its investments in various types of securities or engagement in various practices. Because of the Fund’s use of derivative instruments, the Fund may be subject to many of the risks below indirectly through its derivative transactions. For example, to the extent the Fund enters into an interest rate swap contract, the Fund will be subject to “interest rate” risk. Correlation RiskThe effectiveness of the Fund’s index option-based risk management strategy may be reduced if the performance of the Fund’s equity portfolio does not correlate to that of the index underlying its option positions.Equity Securities RiskThe value of your investment in the Fund is based on the market value (or price) of the securities the Fund holds. You may lose money on your investment due to unpredictable drops in the value of a security or periods of below-average performance in a given stock or the stock market as a whole. The value of the Fund’s investments in equity securities is subject to the risks of unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. The market value of a security can change daily due to political, economic and other events that affect the securities markets generally, as well as those that affect particular companies or governments. These price movements, sometimes called volatility, will vary depending on the types of securities the Fund owns and the markets in which they trade. Historically, the equity markets have moved in cycles, and the value of the Fund’s equity securities may fluctuate drastically from day to day. Individual companies may report poor results or be negatively affected by industry and/or economic trends and developments. The prices of securities issued by such companies may suffer a decline in response to such trends and developments. Equity securities may include common stocks, preferred stocks, warrants, securities convertible into common or preferred stocks and other equity-like interests in an entity. Common stocks represent an equity or ownership interest in an issuer. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock. Equity securities may take the form of stock in corporations, real estate investment trusts (“REITs”) or other trusts and other similar securities. Foreign Securities RiskThe Fund may invest in foreign securities traded in U.S. markets, including through ADRs. Foreign securities are subject to foreign currency fluctuations, higher volatility than U.S. securities and limited liquidity. Political, economic and information risks are also associated with foreign securities. Investments in emerging markets may be subject to these risks to a greater extent than those in more developed markets. The Fund’s investments in foreign securities may be subject to foreign withholding and other taxes. In that case, the Fund’s yield on those securities would be decreased. Settlement practices for transactions in foreign markets may differ from those in U.S. markets. Such differences include delays beyond periods customary in the U.S. and practices, such as delivery of securities prior to receipt of payment, which increase the likelihood of a “failed settlement.” Failed settlements can result in losses to the Fund. Investments in emerging markets may be subject to these risks to a greater extent than those in more developed markets. These risks also apply to securities of foreign issuers traded in the United States or through depository receipt programs such as American Depository Receipts.Investments in Other Investment Companies RiskThe Fund will indirectly bear the management service and other fees of the other investment company in addition to its own expenses. Management RiskThis is the risk that a strategy used by the Fund’s portfolio managers may fail to produce the intended result. Market RiskThis is the risk that the market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions.

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Investment Goal, Strategies and Risks Options RiskThe value of the Fund’s positions in index options may fluctuate in response to changes in the value of the underlying index. Writing index call options can reduce the risk of owning stocks, but it limits the opportunity to profit from an increase in the market value of stocks in exchange for up-front cash at the time of selling the call option. The Fund also risks losing all or part of the cash paid for purchasing index put options. Unusual market conditions or the lack of a ready market for any particular option at a specific time may reduce the effectiveness of the Fund’s option strategies, and for these and other reasons the Fund’s option strategies may not reduce the Fund’s volatility to the extent desired. From time to time, the Fund may reduce its holdings of put options, resulting in an increased exposure to a market decline. REITs RiskThe real estate industry is particularly sensitive to economic downturns. Securities of companies in the real estate industry, including REITs, are sensitive to factors such as changes in real estate values, property taxes and tax laws, interest rates, cash flow of underlying real estate assets, occupancy rates, government regulations affecting zoning, land use and rents, and the management skill and creditworthiness of the issuer. Companies in the real estate industry also may be subject to liabilities under environmental and hazardous waste laws. In addition, the value of a REIT is affected by changes in the value of the properties owned by the REIT or the mortgage loans held by the REIT. REITS are also subject to default and prepayment risk. REITs are dependent upon cash flow from their investments to repay financing costs and also on the ability of the REITs’ managers. The Fund will indirectly bear its proportionate share of expenses, including management fees, paid by each REIT in which it invests in addition to the expenses of the Fund. Additional Information Regarding the Gateway Predecessor FundThe Fund acquired the assets and liabilities of the Gateway Predecessor Fund in a reorganization (the “Reorganization”) on February 19, 2008. The returns shown for periods prior to February 15, 2008 in the Risk/Return Bar Chart and Table in the Fund summary reflect the performance of the Gateway Predecessor Fund. Shareholders of the Gateway Predecessor Fund received Class A shares of the Fund in the Reorganization, which are offered in a separate prospectus. The Fund’s Class Y shares were not outstanding prior to the Reorganization. Although the Gateway Predecessor Fund’s shares and the Fund’s Class Y shares would have had substantially similar annual returns because the shares would have been invested in the same portfolio of securities, returns for Class Y shares would have been different to the extent their respective expenses differ. Performance for periods after the Reorganization reflects actual Class Y performance.

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Investment Goals, Strategies and Risks Loomis Sayles Absolute Strategies Fund Investment Goal The Fund seeks to provide an attractive absolute total return, complemented by prudent investment management designed to manage risks and protect investor capital. The secondary goal of the Fund is to achieve these returns with relatively low volatility. The investment goal is non-fundamental and may be changed without shareholder approval. The Fund will provide 60 days’ prior notice to shareholders before changing the investment goal.Principal Investment Strategies The Fund has an absolute return investment objective, which means that it is not managed relative to an index and that it attempts to achieve positive total returns over a full market cycle. The Fund intends to pursue its objective by utilizing a flexible investment approach that allocates investments across a global range of investment opportunities related to credit, currencies and interest rates, while employing risk management strategies to mitigate downside risk. The Fund may invest up to 100% of its total assets in below investment-grade fixed-income securities (also known as “junk bonds”) and derivatives that have returns related to the returns on below investment-grade fixed-income securities, although it is expected that, under normal market conditions, the Fund’s net exposure (i.e., long exposures obtained through direct investments in securities and in derivatives minus short exposures obtained through derivatives) to below investment-grade fixed-income assets generally will not exceed 50% of the Fund’s total assets. Under normal market conditions, the Fund also may invest up to 50% of its total assets in investments denominated in non-U.S. currencies and related derivatives, including up to 20% in investments denominated in emerging market currencies and related derivatives. The Fund expects that its exposure to these asset classes will often be obtained substantially through the use of derivative instruments. The Fund defines an “emerging market currency” as a currency of a country that carries a sovereign quality rating that is rated below investment-grade by either S&P or Moody’s, or is unrated by both S&P and Moody’s. Currency positions that are intended to hedge the Fund’s non-U.S. currency exposure (i.e., currency positions that are not made for investment purposes) will offset positions in the same currency that are made for investment purposes when calculating the limitation on investments in non-U.S. and emerging market currency investments because the Fund believes that hedging a currency position is likely to negate some or all of the currency risk associated with the original currency position. The Fund does not have limits on the duration of its portfolio, and the Fund’s duration will change over time.In selecting investments for the Fund, the Adviser develops long-term portfolio themes driven by macro-economic indicators. These include secular global economic trends, demographic trends and labor supply, analysis of global capital flows and assessments of geopolitical factors. The Adviser then develops shorter-term portfolio strategies based on factors including, but not limited to, economic, credit and Federal Reserve cycles, and top-down sector valuations and bottom-up security valuations. The Adviser employs active risk management, with a focus on credit, interest rate and currency risks. Additionally, the portfolio managers will use risk management tools in constructing and optimizing the portfolio and seek to manage risk on an ongoing basis. The portfolio management team expects to actively evaluate each investment idea based upon its return potential, its level of risk and its fit within the team’s overall macro strategy when deciding whether to buy or sell investments, with the goal of continually optimizing the Fund’s portfolio.The Fund will pursue its investment goal by obtaining long investment exposures through direct cash investments and derivatives and short investment exposures substantially through derivatives. A “long” investment exposure is an investment that rises in value with a rise in the value of an asset, asset class or index and declines in value with a decline in the value of that asset, asset class or index. A “short” investment exposure is an investment that rises in value with a decline in the value of an asset, asset class or index and declines in value with a rise in the value of that asset, asset class or index. The Fund’s long and short investment exposures may, at times, each reach 100% of the assets invested in the Fund (excluding instruments primarily used for duration management and short-term investments (such as cash and money market instruments)), although these exposures may be higher or lower at any given time.Fixed-Income Investments. In connection with its principal investment strategies, the Fund may invest in a broad range of U.S. and non-U.S. fixed-income securities, including, but not limited to, corporate bonds, municipal securities, U.S. and non-U.S. government securities (including their agencies, instrumentalities and sponsored entities), securities of supranational entities, emerging market securities, commercial and residential mortgage-backed securities, collateralized mortgage obligations, other mortgage-related securities (such as adjustable rate mortgage securities), asset-backed securities, bank loans, convertible bonds, Rule 144A securities, REITs, zero-coupon securities, step coupon securities, pay-in-kind securities, inflation-linked bonds, variable and floating rate securities, private placements and commercial paper.Non-U.S. Currency Investments. Under normal market conditions, the Fund may engage in a broad range of transactions involving non-U.S. and emerging market currencies, including, but not limited to, purchasing and selling forward currency exchange contracts in non-U.S. or emerging market currencies, investing in non-U.S. currency futures contracts, investing in options on non-U.S. currencies and non-U.S. currency futures, investing in cross-currency instruments (such as swaps), investing directly in non-U.S. currencies and investing in securities denominated in non-U.S. currencies. The Fund may engage in non-U.S. currency transactions for investment or for hedging purposes.Derivative Investments. For investment and hedging purposes, the Fund may invest substantially in a broad range of derivatives instruments and sometimes the majority of its investment returns will derive from its derivative investments. These derivative instruments include, but are not limited to, futures contracts (such as treasury futures and index futures), forward contracts, options (such as options on futures contracts, options on securities,

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Investment Goals, Strategies and Risks interest rate/bond options, currency options, options on swaps and OTC options), warrants (such as non-U.S. currency warrants) and swap transactions (such as interest rate swaps, total return swaps and index swaps). In addition, the Fund may invest in credit derivative products that may be used to manage default risk and credit exposure. Examples of such products include, but are not limited to, credit default swap index products (such as LCDX, CMBX and ABX index products), single name credit default swaps, loan credit default swaps and asset-backed credit default swaps. The Fund may, at times, invest substantially all of its assets in derivatives and securities used to support its obligations under those derivatives. Derivative instruments (such as those listed above) can be used to acquire or to transfer the risk and returns of a security without buying or selling the security. The Fund’s strategy may be highly dependent on the use of derivatives, and to the extent that they become unavailable or unattractive the Fund may be unable to fully implement its investment strategy.The Fund’s use of derivatives may cause it to be leveraged. Leverage leads to investment exposure in excess of the amount actually invested in the Fund and increases risk.The Fund is non-diversified, which means that it is not limited to a percentage of assets that it may invest in any one issuer. Because the Fund may invest in the securities of a limited number of issuers, an investment in the Fund may involve a higher degree of risk than would be present in a diversified portfolio. The Fund expects to engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance.The percentage limitations set forth herein are not investment restrictions and the Fund may exceed these limits from time to time. In addition, when calculating these exposures, the Fund may use the notional value or an adjusted notional value of a derivative in order to reflect what the Adviser believes to be the most accurate assessment of the Fund’s real economic exposure.
Although the Fund seeks positive total returns over time, the Fund’s investment returns may be volatile over short periods of time. The Fund may out-perform the overall securities market during periods of flat or negative performance and may underperform during periods of strong market performance. There can be no assurance that the Fund’s returns over time or during any period will be positive.As a temporary defensive measure, the Fund may hold any portion of its assets in cash (U.S. dollars, foreign currencies or multinational currency units) and/or invest in money market instruments or high quality debt securities and take other defensive positions as the Adviser deems appropriate. The Fund may miss certain investment opportunities if it uses defensive strategies and thus may not achieve its investment goal.
Principal Investment RisksThe Fund has principal investment strategies that come with inherent risks. The principal risks of investing in the Fund are summarized in the Fund Summary under “Principal Investment Risks.” The Fund does not represent a complete investment program. The following is a list of the risks to which the Fund may be subject because of its investments in various types of securities or engagement in various practices. Because of the Fund’s use of derivative instruments, the Fund may be subject to many of the risks below indirectly through its derivative transactions. For example, to the extent the Fund enters into an interest rate swap contract, the Fund will be subject to “interest rate” risk. Agency Securities Risk
Agency securities are subject to fixed-income securities risk, as described herein. Certain debt securities issued or guaranteed by agencies of the U.S. government are guaranteed as to the payment of principal and interest by the relevant entity but have not been backed by the full faith and credit of the U.S. government. Instead, they have been supported only by the discretionary authority of the U.S. government to purchase the agency’s obligations. An event affecting the guaranteeing entity could adversely affect the payment of principal or interest or both on the security and, therefore, these types of securities should be considered to be riskier than U.S. government securities. In addition, in 2008 the U.S. Treasury Department placed certain government-sponsored companies into conservatorship. The companies remain in conservatorship, and the effect that this conservatorship will have on the companies’ debt and equity securities is unclear.Below Investment-Grade Fixed-Income Securities Risk
Below investment-grade fixed-income securities, also known as “junk bonds,” are rated below investment-grade quality and may be considered speculative with respect to the issuer’s continuing ability to make principal and interest payments. To be considered rated below investment-grade quality, none of the three major rating agencies (Moody’s, Fitch or S&P) must have rated the security in one of their respective top four rating categories at the time the Fund acquires the security or, if the security is unrated, the Adviser has determined it to be of comparable quality. Analysis of the creditworthiness of issuers of below investment-grade fixed-income securities may be more complex than for issuers of higher-quality debt securities, and the Fund’s ability to achieve its investment objectives may, to the extent the Fund invests in below investment-grade fixed-income securities, be more dependent upon the Adviser’s credit analysis than would be the case if the Fund were investing in higher-quality securities. The issuers of these securities may be in default or have a currently identifiable vulnerability to default on their payments of principal and interest, or may otherwise present elements of danger with respect to payments of principal or interest.

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Investment Goals, Strategies and Risks Below investment-grade fixed-income securities may be more susceptible to real or perceived adverse economic and competitive industry conditions than higher-grade securities. Yields on below investment-grade fixed-income securities will fluctuate. If the issuer of below investment-grade fixed-income securities defaults, the Fund may incur additional expenses to seek recovery.Credit/Counterparty Risk
Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments. Foreign securities may be subject to increased credit risk because of the potential difficulties of requiring foreign entities to honor their contractual commitments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains. Currency RiskThis is the risk that fluctuations in exchange rates between the U.S. dollar and foreign currencies and between various foreign currencies may cause the value of the Fund’s investments to decline. The market for some (or all) currencies may from time to time have low trading volume and become illiquid, which may prevent the Fund from effecting positions or from promptly liquidating unfavorable positions in such markets, thus subjecting the Fund to substantial losses.Derivatives Risk
Derivatives are financial contracts whose value depends upon or is derived from the value of an underlying asset, reference rate or index. Examples of derivatives include futures contracts, swaps and forward transactions. The Fund expects to make extensive use of derivative transactions. Therefore, the performance of the Fund may depend to a great extent on the success of the Adviser’s derivative strategies. This use of derivatives for these purposes entails greater risk than using derivatives solely for hedging purposes. The Fund’s use of derivatives, such as futures, forward contracts, options, warrants, foreign currency transactions, swaps and credit default swaps, involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward contracts, swaps and other over-the-counter derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices, liquidity risk, allocation risk and the risk of losing more than the initial margin required to initiate derivatives positions. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. The Adviser will attempt to ensure that at all times the Fund has sufficient liquid assets to enable it to satisfy its obligations under its derivative contracts; however, it is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain.Emerging Markets RiskThis is the risk associated with investing in companies traded in emerging securities markets, which may be smaller and have shorter operating histories than companies in developed markets. Emerging markets involve risks in addition to, and greater than, those generally associated with investing in developed foreign markets. The extent of economic development, political stability, market depth, infrastructure, capitalization and regulatory oversight in emerging market economies is generally less than in more developed markets. Fixed-Income Securities Risk
Fixed-income securities are subject to credit risk, interest rate risk and liquidity risk. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. This means that you may lose money on your investment due to unpredictable drops in a security’s value or periods of below-average performance in a given security or in the securities market as a whole. In addition, an economic downturn or period of rising interest rates could adversely affect the market of these securities and reduce the Fund’s ability to sell them. Below investment-grade fixed-income securities may be subject to these risks to a greater extent than other fixed-income securities. These securities are considered predominantly speculative with respect to the issuer’s continuing ability to make principal and interest payments. Rule 144A fixed-income securities may be more illiquid than other fixed-income securities. Zero-coupon bonds may be subject to these risks to a greater extent than other fixed-income securities. Foreign Securities RiskThis is the risk associated with investments in issuers located in foreign countries. The Fund’s investments in foreign securities may experience more rapid and extreme changes in value than investments in securities of U.S. issuers. The securities markets of many foreign countries are relatively small, with a limited number of issuers and a small number of securities. In addition, foreign companies often are not subject to the same degree of regulation as U.S. companies. Reporting, accounting and auditing standards of foreign countries differ, in some cases significantly, from U.S. standards. Nationalization, expropriation or confiscatory taxation, currency blockage, political changes or diplomatic developments can cause the value of the Fund’s non-U.S.

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Investment Goals, Strategies and Risks investments to decline. In the event of nationalization, expropriation or other confiscation, the Fund could lose its entire foreign investment. Investments in emerging markets may be subject to these risks to a greater extent than those in more developed markets and securities of developed market companies that conduct substantial business in emerging markets may also be subject to greater risk. These risks also apply to securities of foreign issuers traded in the United States or through depositary receipt programs such as American Depositary Receipts. To the extent the Fund invests a significant portion of its assets in a specific geographic region, the Fund may have more exposure to regional political, economic, environmental, credit and information risks. Inflation/Deflation Risk
Inflation risk is the risk that the value of assets or income from investments will be worth less in the future as inflation decreases the present value of future payments. Deflation risk is the risk that prices throughout the economy decline over time (the opposite of inflation). Deflation may have an adverse effect on the creditworthiness of issuers and may make issuer default more likely, which may result in a decline in the value of the Fund’s portfolio. Because the Fund seeks positive returns that exceed the rate of inflation over time, if the portfolio managers’ inflation forecasts are incorrect, the Fund may be more severely impacted than other funds. Interest Rate RiskThis is the risk that changes in interest rates will affect the value of the Fund’s investments in fixed-income securities, such as bonds, notes, asset-backed securities and other income-producing securities and derivatives. Fixed-income securities are obligations of the issuer to make payments of principal and/or interest on future dates. Increases in interest rates may cause the value of the Fund’s investments to decline. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment. Generally, the value of fixed-income securities, including short-term fixed-income securities, rises when prevailing interest rates fall and falls when interest rates rise. A significant change in interest rates could cause the Fund’s share price (and the value of your investment) to change. Issuer RiskThe value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services. Leverage Risk
Use of derivative instruments may involve leverage. Leverage is the risk associated with securities or practices that multiply small index, market or asset price movements into larger changes in value. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. Leverage magnifies the potential for gain and the risk of loss. As a result, a relatively small decline in the value of the underlying investments could result in a relatively large loss. Although the Adviser will seek to manage the Fund’s risk from the leverage associated with derivative investments by closely monitoring the volatility of such investments, the Adviser may not be successful in this respect. The use of leverage will increase the impact of gains and losses on the Fund’s returns, and may lead to significant losses if investments are not successful. However, the Adviser will attempt to ensure that at all times, the Fund has sufficient liquid assets to enable it to satisfy its obligations under its derivative contracts. Liquidity RiskLiquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Derivatives and securities that involve substantial interest rate or credit risk tend to involve greater liquidity risk. In addition, liquidity risk tends to increase to the extent the Fund invests in securities whose sale may be restricted by law or by contract, such as Rule 144A securities. Investment in derivatives may be especially illiquid when compared to other securities, especially during periods of market stress. Similarly, the market for money market and similar instruments may become illiquid at certain times. At these times, it may be difficult to sell securities. Illiquid investments also may be difficult to value. Management RiskThis is the risk that a strategy used by the Fund’s portfolio managers may fail to produce the intended result. Market RiskThis is the risk that the market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions.Mortgage-Related and Asset-Backed Securities Risk
In addition to the risks associated with investments in fixed-income securities generally (for example, credit, liquidity and valuation risk), mortgage-related and asset-backed securities are subject to the risks of the mortgages and assets underlying the securities as well as prepayment risk, the risk that the securities may be prepaid and result in the reinvestment of the prepaid amounts in securities with lower yields than the prepaid obligations. Conversely, there is a risk that an unexpected rise in interest rates will extend the life of a mortgage-related or asset-backed security beyond the expected prepayment time, typically reducing the security’s value. The Fund also may incur a loss when there is a prepayment of securities that were purchased at

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Investment Goals, Strategies and Risks a premium. The Fund’s investments in other asset-backed securities are subject to risks similar to those associated with mortgage-related securities, as well as additional risks associated with the nature of the assets and the servicing of those assets. The market for mortgage-backed securities (and other asset-backed securities) has experienced high volatility and a lack of liquidity. As a result, the value of many of these securities has significantly declined. There can be no assurance that these markets will become more liquid or less volatile, and it is possible that the value of these securities could decline further. Non-Diversification RiskCompared with other mutual funds, the Fund may invest a greater percentage of its assets in a particular issuer and may invest in fewer issuers. Therefore, the Fund may have more risk because changes in the value of a single security or the impact of a simple economic, political or regulatory occurrence may have a greater adverse impact on the Fund’s NAV. Short Exposure RiskA short exposure through a derivative may present various risks, including credit/counterparty risk and leverage risk. If the value of the asset, asset class or index on which the Fund has obtained a short investment exposure increases, the Fund will incur a loss. Unlike a direct cash investment like a stock, bond or ETF, where the potential loss is limited to the purchase price, the potential risk of loss from a short exposure is theoretically unlimited. Moreover, there can be no assurance that securities necessary to cover a short position will be available for purchase.

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Investment Goals, Strategies and Risks Loomis Sayles Multi-Asset Real Return Fund Investment Goal The Fund seeks to maximize real returns consistent with prudent investment management. The investment goal is non-fundamental and may be changed without shareholder approval. The Fund will provide 60 days’ prior notice to shareholders before changing the investment goal.Principal Investment Strategies The Fund will pursue its investment goal primarily through exposure to investments in fixed-income securities, equity securities, currencies and commodity-linked instruments. The Fund expects that its exposure to these asset classes will often be obtained substantially through the use of derivative instruments. The Fund is designed for investors seeking “real returns” (i.e., total returns that exceed the rate of inflation over a full market cycle regardless of market conditions). Although the Fund seeks positive total returns over time, the Fund’s investment returns may be volatile over short periods of time. The Fund may outperform the overall securities market during periods of flat or negative market performance and may underperform during periods of strong market performance. There can be no assurance that the Fund’s returns over time or during any period will be positive or that the Fund will provide returns in excess of inflation over time or during any particular period. The Fund does not have limits on the duration of its portfolio, and the Fund’s duration will change over time.In selecting investments for the Fund, the Adviser seeks to draw on its macroeconomic research in global inflationary cycles to identify and to implement investment opportunities that it believes will outpace inflation in a variety of inflationary environments. Two inflationary conditions that the Adviser believes could emerge in the current global environment are:

• Classic Inflation, which often follows periods of constrained resources (such as labor or raw materials) and is the typical form of inflation in developed countries during the last quarter century; and
• Debt Induced Inflation, which often is prompted by high levels of debt relative to gross domestic product (“GDP”) and historically has often resulted in balance of payments crises and currency devaluation.

Using a global asset allocation analysis, the portfolio managers seek to identify the relative return potential of various asset classes. This analysis is intended to provide the foundation for weighting the asset classes as a whole to develop a portfolio with superior risk and return characteristics in the view of the Adviser. The Adviser expects to use a bottom-up investment process to generate investment ideas consistent with the expectations for the asset classes. This will utilize the Adviser’s robust research resources, which include, but are not limited to, fundamental and quantitative capabilities. Additionally, the portfolio managers will use risk management tools to construct the portfolio and manage risk and volatility on an ongoing basis with an objective of targeting a relatively stable level of annualized volatility for the Fund’s overall portfolio. The portfolio management team expects to actively evaluate each investment idea based upon its return potential, its level of risk and its fit within the team’s overall macro strategy when deciding whether to buy or sell investments, with the goal of continually optimizing the Fund’s portfolio.The Fund will pursue its investment goal by obtaining long investment exposures through direct cash investments and derivatives and short investment exposures substantially through derivatives. A “long” investment exposure is an investment that rises in value with a rise in the value of an asset, asset class or index and declines in value with a decline in the value of that asset, asset class or index. A “short” investment exposure is an investment that rises in value with a decline in the value of an asset, asset class or index and declines in value with a rise in the value of that asset, asset class or index. The Fund’s long and short investment exposures may, at times, each reach 100% of the assets invested in the Fund (excluding instruments primarily used for duration management and short-term investments (such as cash and money market instruments)), although these exposures may be higher or lower at any given time.Fixed-Income Investments. Under normal market conditions, the Fund expects to invest at least 50% of its total assets in fixed-income securities and derivatives that have returns related to the returns on fixed-income securities. At times, the Fund expects to gain this exposure substantially through the use of derivatives. The Fund may invest in a broad range of U.S. and non-U.S. fixed-income securities, including, but not limited to, corporate bonds, municipal securities, U.S. and non-U.S. government securities (including their agencies, instrumentalities and sponsored entities), securities of supranational entities, partnership securities, commercial and residential mortgage-backed securities, other mortgage-related securities (such as adjustable rate mortgage securities), asset-backed securities, bank loans, depositary receipts, convertible bonds, Rule 144A securities, REITs, zero-coupon securities, step coupon securities, stripped securities, pay-in-kind securities, inflation-linked bonds, variable and floating rate securities, when-issued securities, private placements, privatizations, hybrid instruments, structured investments, repurchase agreements and commercial paper. The Fund may invest in securities of any maturity, market sector or credit quality, including below investment-grade fixed-income securities (also known as “junk bonds”). Below investment-grade fixed-income securities are below investment-grade quality (i.e., none of the three major rating agencies (Moody’s, Fitch or S&P) have rated the securities in one of their top four ratings categories) or, if the security is unrated, the Adviser has determined it to be of comparable quality. Equity Investments. Although the Fund expects that in normal market conditions it will have net long equity exposures, in the Adviser’s sole discretion the Fund may have net short equity exposures of up to 35% of the Fund’s total assets and gross short equity exposures of up to 70% of the Fund’s total assets. At times, the Fund expects to gain this exposure substantially through the use of derivatives. For these purposes, a short equity position is a position that will decline in value with a rise of the equity markets. A gross short equity position represents the total of all short positions without regard

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Investment Goals, Strategies and Risks to any offsetting long positions. A net short equity position is the total of all short positions offset by any long positions (e.g., a direct investment in a stock). The Adviser may have net short equity exposures for investment or hedging purposes, including but not limited to macro hedges to protect the Fund’s entire portfolio or more targeted hedges to neutralize specific components of the Fund’s equity market exposure. The Fund may invest in a broad range of U.S. and non-U.S. equity securities, including, but not limited to, common and preferred stocks, convertible preferred stocks, depositary receipts, warrants, rights, Rule 144A securities, private placements, privatizations, hybrid instruments, equity-linked securities and other equity interests. The Fund may invest in securities of issuers of any market capitalization. In addition to direct investment in securities and other instruments, the Fund may invest in other funds, including ETFs, unit investment trusts, and other pooled investment vehicles that may or may not be registered under the 1940 Act. The Fund may invest in REITs and U.S. and non-U.S. real estate companies.Non-U.S. Currency Investments. Under normal market conditions, the Fund expects to invest up to 30% of its total assets in investments in non-U.S. currencies, securities denominated in non-U.S. currencies and related derivative transactions. The Fund may engage in a broad range of transactions involving non-U.S. currencies, including, but not limited to, purchasing and selling forward currency exchange contracts in non-U.S. currencies, investing in non-U.S. currency futures contracts, investing in options on non-U.S. currencies and non-U.S. currency futures, cross-hedging between two or more currencies, investing directly in non-U.S. currencies and investing in securities denominated in non-U.S. currencies, including securities of emerging market issuers. The Fund may engage in non-U.S. currency transactions for investment or for hedging purposes. Currency positions that are intended to hedge the Fund’s non-U.S. currency exposure (i.e., currency positions that are not made for investment purposes) will offset positions in the same currency that are made for investment purposes when calculating the 30% limitation in investments in non-U.S. currency investments because the Fund believes that hedging a currency position is likely to negate some or all of the currency risk associated with the original currency position.Commodity Investments. Under normal market conditions, the Fund expects that up to 25% of its total assets will be invested in commodity-linked instruments. Commodities are assets that have tangible properties, such as oil, metals, and agricultural products. A “commodity-linked instrument” is an instrument whose value is linked to the price movement of a commodity, a commodity index, or a commodity option or futures contract. An investment in a commodity-linked instrument does not generally provide a claim to the tangible underlying commodity. The Fund and the Commodity Subsidiary may invest in a broad range of commodity-linked instruments, including, but not limited to, commodity-linked derivatives (such as commodity-linked swaps, futures, options or options on futures), commodity-linked debt (including leveraged or unleveraged notes that are derivative debt instruments with principal and/or coupon payments linked to the performance of commodities) or commodity-linked ETFs (i.e., ETFs that have their value derived from the price movement of an underlying commodity). The Fund also may invest in equity and fixed-income securities of issuers in commodity-related industries (for example, mining companies). These investments will not be counted toward the 25% limitation on investments in commodity-linked instruments, but rather will be considered investments in equity securities or fixed-income securities, as appropriate. The Fund expects to obtain its investment exposure to commodity-linked instruments in whole or in significant part indirectly by investing in the Commodity Subsidiary, although in certain circumstances it is possible that the Fund may also invest directly in certain commodity-linked instruments. The Commodity Subsidiary is advised by the Adviser and will invest primarily in commodity-linked instruments and fixed-income securities and other investments that serve as collateral for its derivative positions. The Fund may invest up to 25% of its total assets in the Commodity Subsidiary.Derivative Investments. The Fund may invest substantially in a broad range of derivative instruments for both hedging and investment purposes, including, but not limited to, futures contracts (such as futures that provide for physical delivery, treasury futures, single stock futures, and index futures), forward contracts, options (such as options on futures contracts, options on securities, options on securities indices, interest rate/bond options, currency options, options on swaps and exchange-traded and over-the-counter options), warrants (such as index warrants), swap transactions (such as interest rate swaps, total return swaps, index swaps and equity swaps), structured notes, foreign currency transactions, commodity-linked derivatives and credit default swaps. The Fund may, at times, invest substantially all of its assets in derivatives and securities used to support its obligations under those derivatives. Derivative instruments (such as those listed above) can be used to acquire or to transfer the risk and returns of a security without buying or selling the security. The Fund’s strategy may be highly dependent on the use of derivatives, and to the extent that they become unavailable or unattractive the Fund may be unable to fully implement its investment strategy.The Fund’s use of derivatives may cause it to be leveraged. Leverage leads to investment exposure in excess of the amount actually invested in the Fund and increases risk.The Fund is non-diversified, which means that it is not limited to a percentage of assets that it may invest in any one issuer. Because the Fund may invest in the securities of a limited number of issuers, an investment in the Fund may involve a higher degree of risk than would be present in a diversified portfolio.
The Fund expects to engage in active and frequent trading of securities and other instruments. Effects of frequent trading may include high transaction costs, which may lower the Fund’s return, and realization of greater short-term capital gains, distributions of which are taxable to shareholders who are individuals as ordinary income. Trading costs and tax effects associated with frequent trading may adversely affect the Fund’s performance.The percentage limitations set forth herein are not investment restrictions and the Fund may exceed these limits from time to time. In addition, when calculating these exposures, the Fund may use the notional value or an adjusted notional value of a derivative in order to reflect what the Adviser believes to be the most accurate assessment of the Fund’s real economic exposure.Although the Fund will not concentrate more than 25% of its total assets in issuers in any one industry, it may maintain aggregate exposure of more than 25% of its total assets to commodity-linked and commodity-related investments, and therefore may be significantly exposed to commodity-related risks.

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Investment Goals, Strategies and Risks As a temporary defensive measure, the Fund may hold any portion of its assets in cash (U.S. dollars, foreign currencies or multinational currency units) and/or invest in money market instruments or high quality debt securities and take other defensive positions as the Adviser deems appropriate. The Fund may miss certain investment opportunities if it uses defensive strategies and thus may not achieve its investment goal.Principal Investment RisksThe Fund has principal investment strategies that come with inherent risks. The principal risks of investing in the Fund are summarized in the Fund Summary under “Principal Investment Risks.” The Fund does not represent a complete investment program. The following is a list of the risks to which the Fund may be subject because of its investments in various types of securities or engagement in various practices. Because of the Fund’s use of derivative instruments, the Fund may be subject to many of the risks below indirectly through its derivative transactions. For example, to the extent the Fund enters into an interest rate swap contract, the Fund will be subject to “interest rate” risk. Agency Securities Risk
Agency securities are subject to fixed-income securities risk, as described herein. Certain debt securities issued or guaranteed by agencies of the U.S. government are guaranteed as to the payment of principal and interest by the relevant entity but have not been backed by the full faith and credit of the U.S. government. Instead, they have been supported only by the discretionary authority of the U.S. government to purchase the agency’s obligations. An event affecting the guaranteeing entity could adversely affect the payment of principal or interest or both on the security and, therefore, these types of securities should be considered to be riskier than U.S. government securities. In addition, in 2008 the U.S. Treasury Department placed certain government-sponsored companies into conservatorship. The companies remain in conservatorship, and the effect that this conservatorship will have on the companies’ debt and equity securities is unclear. Below Investment-Grade Fixed-Income Securities Risk
Below investment-grade fixed-income securities, also known as “junk bonds,” are rated below investment-grade quality and may be considered speculative with respect to the issuer’s continuing ability to make principal and interest payments. To be considered rated below investment-grade quality, none of the three major rating agencies (Moody’s, Fitch or S&P) must have rated the security in one of their respective top four rating categories at the time the Fund acquires the security or, if the security is unrated, the Adviser has determined it to be of comparable quality. Analysis of the creditworthiness of issuers of below investment-grade fixed-income securities may be more complex than for issuers of higher-quality debt securities, and the Fund’s ability to achieve its investment objectives may, to the extent the Fund invests in below investment-grade fixed-income securities, be more dependent upon the Adviser’s credit analysis than would be the case if the Fund were investing in higher-quality securities. The issuers of these securities may be in default or have a currently identifiable vulnerability to default on their payments of principal and interest, or may otherwise present elements of danger with respect to payments of principal or interest.Below investment-grade fixed-income securities may be more susceptible to real or perceived adverse economic and competitive industry conditions than higher-grade securities. Yields on below investment-grade fixed-income securities will fluctuate. If the issuer of below investment-grade fixed-income securities defaults, the Fund may incur additional expenses to seek recovery.Commodity Risk
Because a significant portion of the Fund’s assets may be invested in commodity-linked and commodity-related investments, exposure to which will often be obtained substantially through the use of derivative instruments, the Fund may be subject to the risks of investing in commodities and derivatives risk. Exposure to the commodities markets may subject the Fund to greater volatility than investments in other securities. The value of these investments may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. The prices of energy, industrial metals, precious metals, agriculture and livestock sector commodities may fluctuate widely due to factors such as changes in value, supply and demand and governmental regulatory policies. The energy sector can be significantly affected by changes in the prices and supplies of oil and other energy fuels, energy conservation, the success of exploration projects, and tax and other government regulations, policies of the Organization of Petroleum Exporting Countries (“OPEC”) and relationships among OPEC members and between OPEC and oil-importing nations. The metals sector can be affected by sharp price volatility over short periods caused by global economic, financial and political factors, resource availability, government regulation, economic cycles, changes in inflation or expectations about inflation in various countries, interest rates, currency fluctuations, metal sales by governments, central banks or international agencies, investment speculation and fluctuations in industrial and commercial supply and demand. Commodity-linked instruments may be issued by companies in the financial services sector, including the banking, brokerage and insurance sectors. As a result, events affecting issues in the financial services sector may cause the Fund’s share value to fluctuate. Commodity-linked instruments may be more volatile than the underlying commodities. The Fund intends to gain exposure to commodities in whole or in significant part indirectly by investing in the Commodity Subsidiary, a non-U.S. entity that will be treated as a corporation for U.S. federal income tax purposes. The Fund’s ability to invest in commodity-linked instruments, and the means through which any such investments may be made, will be limited by tax considerations. Recent proposals by the Commodity Futures Trading Commission to limit the availability of the exclusion from the definition of a commodity pool operator for certain funds, which invest in commodities as a significant part of their investment strategies, may also impact the Fund. Any rules, when adopted, may subject the Fund to additional regulation and registration requirements and may limit the Fund’s ability to pursue its investment strategies. As of the date of this prospectus, it is impossible to predict the outcome of these proposals or their potential impact on the Fund.

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Investment Goals, Strategies and Risks Commodity Subsidiary RiskInvesting in a wholly-owned commodity subsidiary organized under the laws of a non-U.S. jurisdiction, such as the Commodity Subsidiary, will indirectly expose the Fund to the risks associated with the Commodity Subsidiary’s investments. The Commodity Subsidiary is not registered under the 1940 Act, and unless otherwise noted, is not subject to all of the investor protections of the 1940 Act. However, the Commodity Subsidiary is wholly-owned and controlled by the Fund and therefore, is unlikely to take action contrary to the interests of the Fund or its shareholders. In monitoring compliance with its investment restrictions, the Fund will consider the assets of the Commodity Subsidiary to be assets of the Fund. Changes in the laws of the United States and/or the Cayman Islands, under which the Fund and the Commodity Subsidiary, respectively, are organized, could negatively affect the Fund and its shareholders. For example, the Cayman Islands do not currently impose any income, corporate or capital gains tax, estate duty, inheritance tax, gift tax or withholding tax on the Commodity Subsidiary. If Cayman Islands law changes such that the Commodity Subsidiary is required to pay Cayman Islands taxes, the Fund’s shareholders may suffer decreased investment returns.Credit/Counterparty Risk
Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments. Foreign securities may be subject to increased credit risk because of the potential difficulties of requiring foreign entities to honor their contractual commitments.The Fund will be subject to credit risks with respect to the counterparties of its derivative transactions. Many of the protections afforded to participants on organized exchanges, such as the performance guarantee of an exchange clearing house, are not available in connection with OTC derivative transactions, such as foreign currency transactions. As a result, in instances when the Fund enters into OTC derivative transactions, the Fund will be subject to the risk that its direct counterparties will not perform their obligations under the transactions and that the Fund will sustain losses or be unable to realize gains. Currency RiskThis is the risk that fluctuations in exchange rates between the U.S. dollar and foreign currencies and between various foreign currencies may cause the value of the Fund’s investments to decline. The market for some (or all) currencies may from time to time have low trading volume and become illiquid, which may prevent the Fund from effecting positions or from promptly liquidating unfavorable positions in such markets, thus subjecting the Fund to substantial losses.Derivatives Risk
Derivatives are financial contracts whose value depends upon or is derived from the value of an underlying asset, reference rate or index. Examples of derivatives include futures contracts, swaps and forward transactions. The Fund expects to make extensive use of derivative transactions. Therefore, the performance of the Fund may depend to a great extent on the success of the Adviser’s derivative strategies. This use of derivatives for these purposes entails greater risk than using derivatives solely for hedging purposes. The Fund’s use of derivatives, such as futures, forward contracts, options, warrants, swaps, structured notes, foreign currency transactions, commodity-linked derivatives and credit default swaps, involves other risks, such as the credit risk relating to the other party to a derivative contract (which is greater for forward contracts, swaps and other over-the-counter derivatives), the risk of difficulties in pricing and valuation, the risk that changes in the value of a derivative may not correlate perfectly with relevant assets, rates or indices, liquidity risk, allocation risk and the risk of losing more than the initial margin required to initiate derivatives positions. There is also the risk that the Fund may be unable to terminate or sell a derivatives position at an advantageous time or price. The Adviser will attempt to ensure that at all times the Fund has sufficient liquid assets to enable it to satisfy its obligations under its derivative contracts; however, it is possible that the Fund’s liquid assets may be insufficient to support its obligations under its derivatives positions. The use of derivatives for other than hedging purposes may be considered a speculative activity, and involves greater risks than are involved in hedging. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. Emerging Markets RiskThis is the risk associated with investing in companies traded in emerging securities markets, which may be smaller and have shorter operating histories than companies in developed markets. Emerging markets involve risks in addition to, and greater than, those generally associated with investing in developed foreign markets. The extent of economic development, political stability, market depth, infrastructure, capitalization and regulatory oversight in emerging market economies is generally less than in more developed markets.Equity Securities RiskThe value of your investment in the Fund is based on the market value (or price) of the securities the Fund holds. You may lose money on your investment due to unpredictable drops in the value of a security or periods of below-average performance in a given stock or the stock market as a whole. The value of the Fund’s investments in equity securities is subject to the risks of unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. The market value of a security can change daily due to political, economic and other events that affect the securities markets generally, as well as those that affect particular companies or governments. These price

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Investment Goals, Strategies and Risks movements, sometimes called volatility, will vary depending on the types of securities the Fund owns and the markets in which they trade. Historically, the equity markets have moved in cycles, and the value of the Fund’s equity securities may fluctuate drastically from day to day. Individual companies may report poor results or be negatively affected by industry and/or economic trends and developments. The prices of securities issued by such companies may suffer a decline in response to such trends and developments. Equity securities may include common stocks, preferred stocks, warrants, securities convertible into common or preferred stocks and other equity-like interests in an entity. Common stocks represent an equity or ownership interest in an issuer. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock. Equity securities may take the form of stock in corporations, real estate investment trusts (“REITs”) or other trusts and other similar securities. Fixed-Income Securities Risk
Fixed-income securities are subject to credit risk, interest rate risk and liquidity risk. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. This means that you may lose money on your investment due to unpredictable drops in a security’s value or periods of below-average performance in a given security or in the securities market as a whole. In addition, an economic downturn or period of rising interest rates could adversely affect the market of these securities and reduce the Fund’s ability to sell them. Below investment-grade fixed-income securities may be subject to these risks to a greater extent than other fixed-income securities. These securities are considered predominantly speculative with respect to the issuer’s continuing ability to make principal and interest payments. Rule 144A fixed-income securities may be more illiquid than other fixed-income securities. Zero-coupon bonds may be subject to these risks to a greater extent than other fixed-income securities. Foreign Securities RiskThis is the risk associated with investments in issuers located in foreign countries. The Fund’s investments in foreign securities may experience more rapid and extreme changes in value than investments in securities of U.S. issuers. The securities markets of many foreign countries are relatively small, with a limited number of issuers and a small number of securities. In addition, foreign companies often are not subject to the same degree of regulation as U.S. companies. Reporting, accounting and auditing standards of foreign countries differ, in some cases significantly, from U.S. standards. Nationalization, expropriation or confiscatory taxation, currency blockage, political changes or diplomatic developments can cause the value of the Fund’s non-U.S. investments to decline. In the event of nationalization, expropriation or other confiscation, the Fund could lose its entire foreign investment. Investments in emerging markets may be subject to these risks to a greater extent than those in more developed markets and securities of developed market companies that conduct substantial business in emerging markets may also be subject to greater risk. These risks also apply to securities of foreign issuers traded in the United States or through depositary receipt programs such as American Depositary Receipts. To the extent the Fund invests a significant portion of its assets in a specific geographic region, the Fund may have more exposure to regional political, economic, environmental, credit and information risks. Inflation/Deflation Risk
Inflation risk is the risk that the value of assets or income from investments will be worth less in the future as inflation decreases the present value of future payments. Deflation risk is the risk that prices throughout the economy decline over time (the opposite of inflation). Deflation may have an adverse effect on the creditworthiness of issuers and may make issuer default more likely, which may result in a decline in the value of the Fund’s portfolio. Because the Fund seeks positive returns that exceed the rate of inflation over time, if the portfolio managers’ inflation forecasts are incorrect, the Fund may be more severely impacted than other funds. Interest Rate RiskThis is the risk that changes in interest rates will affect the value of the Fund’s investments in fixed-income securities, such as bonds, notes, asset-backed securities and other income-producing securities and derivatives. Fixed-income securities are obligations of the issuer to make payments of principal and/or interest on future dates. Increases in interest rates may cause the value of the Fund’s investments to decline. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment. Generally, the value of fixed-income securities, including short-term fixed-income securities, rises when prevailing interest rates fall and falls when interest rates rise. A significant change in interest rates could cause the Fund’s share price (and the value of your investment) to change. Investments in Other Investment Companies RiskThe Fund will indirectly bear the management service and other fees of the other investment company in addition to its own expenses. Issuer RiskThe value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services. Leverage Risk
Use of derivative instruments may involve leverage. Leverage is the risk associated with securities or practices that multiply small index, market or asset price movements into larger changes in value. When a derivative is used as a hedge against an offsetting position that the Fund also holds, any loss generated by the derivative should be substantially offset by gains on the hedged instrument, and vice versa. To the extent that the Fund uses a derivative for purposes other than as a hedge, or if the Fund hedges imperfectly, the Fund is directly exposed to the risks of that derivative and any loss generated by the derivative will not be offset by a gain. Leverage magnifies the potential for gain and the risk of loss. As a result, a relatively small decline in the value

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Investment Goals, Strategies and Risks of the underlying investments could result in a relatively large loss. Although the Adviser will seek to manage the Fund’s risk from the leverage associated with derivative investments by closely monitoring the volatility of such investments, the Adviser may not be successful in this respect. The use of leverage will increase the impact of gains and losses on the Fund’s returns, and may lead to significant losses if investments are not successful. However, the Adviser will attempt to ensure that at all times, the Fund has sufficient liquid assets to enable it to satisfy its obligations under its derivative contracts. Liquidity RiskLiquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Derivatives and securities that involve substantial interest rate or credit risk tend to involve greater liquidity risk. In addition, liquidity risk tends to increase to the extent the Fund invests in securities whose sale may be restricted by law or by contract, such as Rule 144A securities. Investment in derivatives may be especially illiquid when compared to other securities, especially during periods of market stress. Similarly, the market for money market and similar instruments may become illiquid at certain times. At these times, it may be difficult to sell securities. Illiquid investments also may be difficult to value. Management RiskThis is the risk that a strategy used by the Fund’s portfolio managers may fail to produce the intended result. Market RiskThis is the risk that the market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions.Mortgage-Related and Asset-Backed Securities Risk
In addition to the risks associated with investments in fixed-income securities generally (for example, credit, liquidity and valuation risk), mortgage-related and asset-backed securities are subject to the risks of the mortgages and assets underlying the securities as well as prepayment risk, the risk that the securities may be prepaid and result in the reinvestment of the prepaid amounts in securities with lower yields than the prepaid obligations. Conversely, there is a risk that an unexpected rise in interest rates will extend the life of a mortgage-related or asset-backed security beyond the expected prepayment time, typically reducing the security’s value. The Fund also may incur a loss when there is a prepayment of securities that were purchased at a premium. The Fund’s investments in other asset-backed securities are subject to risks similar to those associated with mortgage-related securities, as well as additional risks associated with the nature of the assets and the servicing of those assets. The market for mortgage-backed securities (and other asset-backed securities) has experienced high volatility and a lack of liquidity. As a result, the value of many of these securities has significantly declined. There can be no assurance that these markets will become more liquid or less volatile, and it is possible that the value of these securities could decline further. Non-Diversification RiskCompared with other mutual funds, the Fund may invest a greater percentage of its assets in a particular issuer and may invest in fewer issuers. Therefore, the Fund may have more risk because changes in the value of a single security or the impact of a simple economic, political or regulatory occurrence may have a greater adverse impact on the Fund’s NAV. Short Exposure RiskA short exposure through a derivative may present various risks, including credit/counterparty risk and leverage risk. If the value of the asset, asset class or index on which the Fund has obtained a short investment exposure increases, the Fund will incur a loss. Unlike a direct cash investment like a stock, bond or ETF, where the potential loss is limited to the purchase price, the potential risk of loss from a short exposure is theoretically unlimited. Moreover, there can be no assurance that securities necessary to cover a short position will be available for purchase.

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Management TeamPercentage Investment Limitations. Except as set forth in the SAI, the percentage limitations set forth in this Prospectus and the SAI apply at the time an investment is made and shall not be considered violated unless an excess or deficiency occurs or exists immediately after and as a result of such investment. Portfolio HoldingsA description of each Fund’s policies and procedures with respect to the disclosure of each Fund’s portfolio securities is available in the section “Portfolio Holdings Information” in the SAI. A “snapshot” of each Fund’s investments may be found in its annual and semiannual reports. In addition, a list of each Fund’s full portfolio holdings, which is updated monthly after an aging period of at least 7 days for ASG Diversifying Strategies Fund, ASG Global Alternatives Fund and ASG Managed Futures Strategy Fund and 30 days for Gateway Fund, Loomis Sayles Absolute Strategies Fund and Loomis Sayles Multi-Asset Real Return Fund, is available on the Funds’ website at ga.natixis.com (select the name of the Fund in the “Find a fund” box and then click “Holdings”). These holdings will remain accessible on the website until each Fund files its Form N-CSR or Form N-Q with the Securities and Exchange Commission (the “SEC”) for the period that includes the date of the information. In addition, a list of the Loomis Sayles Funds’ top 10 holdings as of the month-end is generally available within 7 business days after the month-end on the Funds’ website at ga.natixis.com (select the name of the Fund in the “Find a fund” box and then click “Holdings”). Management TeamMeet the Funds’ Investment Advisers and SubadviserThe Natixis Funds family currently includes 29 mutual funds (the “Natixis Funds”). The Natixis Funds family had combined assets of $34.8 billion as of December 31, 2010. Natixis Funds are distributed through Natixis Distributors, L.P. (the “Distributor”).Advisers AlphaSimplex Group, LLC (“AlphaSimplex”), located at One Cambridge Center, Cambridge, Massachusetts 02142, serves as the adviser to the ASG Diversifying Strategies Fund, the ASG Global Alternatives Fund and the ASG Managed Futures Strategy Fund. AlphaSimplex was founded in 1999 and as of December 31, 2010, it serves as investment adviser or subadviser with respect to assets of $1.41 billion.Gateway Investment Advisers, LLC (“Gateway”), located at 312 Walnut St., 35th Floor, Cincinnati, OH 45202-9834, serves as investment adviser to the Gateway Fund. Gateway had approximately $7.7 billion in assets under management at December 31, 2010.Loomis Sayles, located at One Financial Center, Boston, Massachusetts 02111, serves as adviser to the Loomis Sayles Absolute Strategies Fund and the Loomis Sayles Multi-Asset Real Return Fund.Founded in 1926, Loomis Sayles is one of the oldest investment advisory firms in the United States with over $151.6 billion in assets under management as of December 31, 2010. Loomis Sayles has an extensive internal research staff. Loomis Sayles makes investment decisions for the Loomis Sayles Absolute Strategies Fund and the Loomis Sayles Multi-Asset Real Return Fund.AlphaSimplex, Gateway and Loomis Sayles are subsidiaries of Natixis Global Asset Management, L.P. (“Natixis US”), which is part of Natixis Global Asset Management, an international asset management group based in Paris, France. Natixis Global Asset Management is principally owned by BPCE, France’s second largest banking group. BPCE is owned by banks comprising two autonomous and complementary retail banking networks consisting of the Caisse d’Epargne regional savings banks and the Banque Populaire regional cooperative banks. The registered address of Natixis is 30, avenue Pierre Mendès France, 75013 Paris, France. The registered address of BPCE is 50, avenue Pierre Mendès France, 75013 Paris, France. Natixis US has 14 principal subsidiary or affiliated asset management firms that collectively had over $291.8 billion in assets under management as of December 31, 2010.The aggregate advisory and subadvisory fees paid by the Funds during the fiscal year ended December 31, 2010, as a percentage of each Fund’s average daily net assets, were 0.84% for ASG Diversifying Strategies Fund (after waiver), 1.09% for ASG Global Alternatives Fund (after waiver), 0.06% for ASG Managed Futures Strategy Fund (after waiver), 0.59% for Gateway Fund (after waiver), 0.00% for Loomis Sayles Absolute Strategies Fund (after waiver) and 0.00% for Loomis Sayles Multi-Asset Real Return Fund (after waiver).

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Management Team Subadviser Reich & Tang, located at 1411 Broadway, 28th Floor, New York, New York 10018-3450, serves as the subadviser to the ASG Diversifying Strategies Fund, the ASG Global Alternatives Fund and the ASG Managed Futures Strategy Fund. Reich & Tang is a limited liability company with 100% of its membership interest owned by Natixis US. Reich & Tang’s origins date back to 1970, and as of December 31, 2010, it is the investment manager, adviser or subadviser with respect to assets in excess of $12 billion. A discussion of the factors considered by the Board of Trustees in approving the Funds’ investment advisory and sub-advisory contracts is available in the annual report for the twelve months ended December 31, 2009 for the ASG Diversifying Strategies Fund, the semiannual report for the six months ended June 30, 2010 for the Gateway Fund and the ASG Global Alternatives Fund and the annual report for the twelve months ended December 31, 2010 for the ASG Managed Futures Strategy Fund, the Loomis Sayles Absolute Strategies Fund and the Loomis Sayles Multi-Asset Real Return Fund.Portfolio TradesIn placing portfolio trades, the Advisers and Subadviser may use brokerage firms that market each Fund’s shares or are affiliated with Natixis US and the Advisers. In placing trades, the Advisers and Subadviser will seek to obtain the best combination of price and execution, which involves a number of subjective factors. Such portfolio trades are subject to applicable regulatory restrictions and related procedures adopted by the Board of Trustees. Securities Lending. Each of Loomis Sayles Absolute Strategies Fund and Loomis Sayles Multi-Asset Real Return Fund may lend a portion of its portfolio securities to brokers, dealers and other financial institutions provided a number of conditions are satisfied, including that the loan is fully collateralized. Please see “Investment Strategies” in the SAI for details. When a Fund lends portfolio securities, its investment performance will continue to reflect changes in the value of the securities loaned and a Fund will also receive a fee or interest on the collateral. These fees or interest are income to each Fund, although each Fund often must share the income with the securities lending agent and/or the borrower. Securities lending involves, among other risks, the risk of loss of rights in the collateral or delay in recovery of the collateral if the borrower fails to return the security loaned or becomes insolvent. A Fund may pay lending fees to the party arranging the loan.In addition, any investment of cash is generally at the sole risk of the Funds. Any income or gains and losses from investing and reinvesting any cash collateral delivered by a borrower pursuant to a loan are generally at the Fund’s risk, and to the extent any such losses reduce the amount of cash below the amount required to be returned to the borrower upon the termination of any loan, the Funds may be required by the securities lending agent to pay or cause to be paid to such borrower an amount equal to such shortfall in cash, possibly requiring it to liquidate other portfolio securities to satisfy its obligations. Each Fund’s securities lending activities are implemented pursuant to policies and procedures approved by the Board of Trustees and are subject to Board oversight. Transactions with Other Investment Companies. Pursuant to SEC exemptive relief, each Fund may be permitted to invest its daily cash balances in shares of money market and short-term bond funds advised by Natixis Asset Management Advisors, L.P. (“Natixis Advisors”) (an affiliate of AlphaSimplex, Gateway and Loomis Sayles) or its affiliates (“Central Funds”). The Central Funds currently include one money market fund: the Daily Income Fund. The Daily Income Fund is advised by Reich & Tang Asset Management, LLC (“Reich & Tang”). Because AlphaSimplex, Gateway, Loomis Sayles, Natixis Advisors and Reich & Tang are subsidiaries of Natixis US, the Funds and the Central Funds may be considered to be related companies comprising a “group of investment companies” under the 1940 Act.Pursuant to such exemptive relief, the Funds may also borrow and lend money for temporary or emergency purposes directly to and from other funds through an interfund credit facility. In addition to the Funds and the Central Funds, series of the following mutual fund groups may also be able to participate in the facility: Natixis Funds Trust I (except the CGM Advisor Targeted Equity Fund series), Natixis Funds Trust II, Natixis Funds Trust IV, Harris Associates Investment Trust, Loomis Sayles Funds I, Loomis Sayles Funds II and Gateway Trust. The advisers and subadvisers to these mutual funds currently include Natixis Advisors, Reich & Tang, Loomis Sayles, Absolute Asia Asset Management Limited, AEW Capital Management, L.P., AlphaSimplex Group, Gateway, Hansberger Global Investors, Inc., Harris Associates, L.P., Vaughan Nelson Investment Management, L.P. and Westpeak Global Advisors, L.P. (“Westpeak”). Each of these advisers and subadvisers (except Westpeak) are subsidiaries of Natixis US and are thus “affiliated persons” under the 1940 Act by reason of being under common control by Natixis US. In addition, because the Funds, and other funds, are advised by firms that are affiliated with one another, they may be considered to be related companies comprising a “group of investment companies” under the 1940 Act. The Central Funds will participate in the credit facility only as lenders. Participation in such an interfund lending program would be voluntary for both borrowing and lending funds, and a Fund would participate in an interfund lending program only if the Board of Trustees determined that doing so would benefit that Fund. Should a Fund participate in such an interfund lending program, the Board of Trustees would establish procedures for the operation of the program by the advisers or an affiliate. The Funds may engage in the transactions described above without further notice to shareholders. The Funds may also make investments in related investment companies to the extent permitted by SEC regulation. Meet the Funds’ Portfolio Managers The following persons have had primary responsibility for the day-to-day management of each indicated Fund’s portfolio since the date stated below.

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Management Team AlphaSimplexAndrew W. Lo - Dr. Lo founded AlphaSimplex in 1999 and currently serves as the firm’s Chief Investment Strategist. He is also Chairman of AlphaSimplex’s Investment Committee and a member of AlphaSimplex’s Risk Committee. Dr. Lo has been a co-portfolio manager of the ASG Global Alternatives Fund since September 2008, the ASG Diversifying Strategies Fund since August 2009 and the ASG Managed Futures Strategy Fund since July 2010. Dr. Lo is the Harris & Harris Group Professor at Massachusetts Institute of Technology (“MIT”) and Director of MIT’s Laboratory for Financial Engineering.Jeremiah H. Chafkin - Mr. Chafkin has served as President of AlphaSimplex since 2007. He is also a member of AlphaSimplex’s Investment Committee and Risk Committee. Mr. Chafkin has been a co-portfolio manager of the ASG Global Alternatives Fund since September 2008, the ASG Diversifying Strategies Fund since August 2009 and the ASG Managed Futures Strategy Fund since July 2010. From 2006 until November 2007, Mr. Chafkin was President and Chief Executive Officer of the U.S. division of Natixis Global Asset Management. Mr. Chafkin served as president of Charles Schwab Investment Management from 1999 until 2002. From 1999 until 2006, Mr. Chafkin was an Executive Vice President at Charles Schwab. Mr. Chafkin headed investment advice and research for Charles Schwab from 2002 until 2006.Peter A. Lee - Mr. Lee joined AlphaSimplex in 2007 and currently serves as Research Scientist for hedge fund beta replication products. Mr. Lee has served as co-portfolio manager of the ASG Global Alternatives Fund since May 2010. Mr. Lee received an AB in Applied Mathematics with a secondary field in Economics from Harvard University in 2007.Philippe P. Lüdi - Dr. Lüdi joined AlphaSimplex in 2006 and currently serves as Vice President, focusing on Global Macro and Global Tactical Asset Allocation strategies. Dr. Lüdi has served as co-portfolio manager of the ASG Diversifying Strategies Fund since May 2010. Dr. Lüdi received the equivalents of an MA in Molecular and Computational Biology from the University of Basel in 2000, followed by an MS in Statistics in 2002 and a PhD in Bioinformatics in 2006, both from Duke University.Gateway J. Patrick Rogers - Mr. Rogers joined Gateway Investment Advisers, Inc., general partner of Gateway Investment Advisers, L.P., the predecessor to the Adviser (the “Predecessor Adviser”), in 1989 and has been its chief executive officer since 2006, its president and a member of its board of directors since 1995, and its chief investment officer from 1995 through 2005. He has been the co-portfolio manager for the Fund since December 2006. Mr. Rogers was previously portfolio manager from 1997 to December 2006 and prior to that co-portfolio manager from 1994. Mr. Rogers received a BBA from the University of Notre Dame in 1986 and an MBA from Xavier University in 1994. Mr. Rogers was the president of The Gateway Trust, the predecessor to the current Gateway Trust (the “Predecessor Trust”), from January 1997 and a trustee of the Predecessor Trust from December 1998. He holds the designation of Chartered Financial Analyst.Paul R. Stewart - Mr. Stewart joined the Predecessor Adviser in 1995. He served as treasurer of the Predecessor Trust through 1999 and as chief financial officer of the Predecessor Adviser through 2003. He became a senior vice president of the Predecessor Adviser and began working in the area of portfolio management in 2000. Mr. Stewart was appointed chief investment officer of the Predecessor Adviser in January 2006. He served as co-portfolio manager of the Fund since December 2006. Mr. Stewart received a BBA from Ohio University in 1988. He holds the designation of Chartered Financial Analyst.Michael T. Buckius - Mr. Buckius joined the Predecessor Adviser in 1999 and holds the positions of senior vice president and portfolio manager. He has been a co-portfolio manager of the Fund since June 2008 and serves as co-portfolio manager of three funds sub-advised by the Adviser. Mr. Buckius holds a B.A. and M.B.A. in Finance from Loyola College in Baltimore. He holds the designation of Chartered Financial Analyst.Loomis SaylesMatthew J. Eagan - Matthew J. Eagan has served as co-portfolio manager of the Loomis Sayles Absolute Strategies Fund since its inception in December 2010. Mr. Eagan, Vice President of Loomis Sayles, began his investment career in 1989 and joined Loomis Sayles in 1997. Mr. Eagan received a B.A. from Northeastern University and an M.B.A. from Boston University. He holds the designation of Chartered Financial Analyst. Mr. Eagan has over 21 years of investment experience. Kevin Kearns - Kevin Kearns has served as co-portfolio manager of the Loomis Sayles Absolute Strategies Fund since its inception in December 2010 and has served as co-portfolio manager of the Loomis Sayles Multi-Asset Real Return Fund since its inception in September 2010. Mr. Kearns, Vice President of Loomis Sayles, began his investment career in 1986 and joined Loomis Sayles in 2007. Prior to joining Loomis Sayles, he was the director of derivatives, quantitative analysis and risk management at Boldwater Capital Management. Mr. Kearns received a B.S. from Bridgewater State College and an M.B.A. from Bryant College. Mr. Kearns has over 24 years of investment experience.David Rolley - David Rolley has served as co-portfolio manager of the Loomis Sayles Multi-Asset Real Return Fund since its inception in September 2010. Mr. Rolley, Vice President of Loomis Sayles, began his investment career in 1980 and joined Loomis Sayles in 1994. Mr. Rolley holds the designation of Chartered Financial Analyst. He received a B.A. from Occidental College, studied graduate economics at the University of Pennsylvania and has over 30 years of investment experience.

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Management Team Laura Sarlo - Laura Sarlo has served as co-portfolio manager of the Loomis Sayles Multi-Asset Real Return Fund since its inception in September 2010. Ms. Sarlo, Vice President of Loomis Sayles, began her investment career in 1999 and joined Loomis Sayles in 2005. Prior to joining Loomis Sayles, she was a fixed-income analyst at State Street Research & Management. Prior to joining State Street Research & Management, she was a trader analyst at the Federal Reserve Bank of New York. Ms. Sarlo holds the designation of Chartered Financial Analyst. Ms. Sarlo received a B.A. from Drew University and an M.P.P. from Harvard University. Todd P. Vandam - Todd P. Vandam has served as co-portfolio manager of the Loomis Sayles Absolute Strategies Fund since its inception in December 2010. Mr. Vandam, Vice President of Loomis Sayles, began his investment career and joined Loomis Sayles in 1994. Mr. Vandam received a B.A. from Brown University. He holds the designation of Chartered Financial Analyst. Mr. Vandam has over 16 years of investment experience. Reich & Tang Robert S. Rickard - Mr. Rickard is a Senior Vice President of Reich & Tang, and head of Portfolio Management and Trading for the Reich & Tang Funds division, which specializes in cash management strategies. Mr. Rickard has been a co-portfolio manager of the ASG Global Alternatives Fund since September 2008, the ASG Diversifying Strategies Fund since August 2009 and the ASG Managed Futures Strategy Fund since July 2010. Mr. Rickard has focused on the management of short-term assets since joining Reich & Tang’s investment staff in 1992. Mr. Rickard holds a Master of Business Administration degree in Finance from Pace University and a Bachelor of Science in Accounting from Siena College.Please see the Funds’ SAI for information on portfolio manager compensation, other accounts under management by the portfolio managers and the portfolio managers’ ownership of securities in the Funds.Fund ServicesCompensation to Securities DealersEach Fund may make payments to financial intermediaries that provide shareholder services to shareholders whose shares are held of record in omnibus, other group accounts (for example, 401(k) plans) or accounts traded through registered securities clearing agents to compensate those intermediaries for services they provide to such shareholders, including, but not limited to, sub-accounting, sub-transfer agency, similar shareholder or participant recordkeeping, shareholder or participant reporting, or shareholder or participant transaction processing (“recordkeeping and processing-related services”). The actual payments, and the services provided, vary from firm to firm. These fees are paid by each Fund in light of the fact that other costs may be avoided by each Fund where the intermediary, not each Fund’s service provider, provides services to Fund shareholders.

The Distributor, a Fund’s adviser and each of their respective affiliates may, out of their own resources, which generally come directly or indirectly from fees paid by the Funds, make payments to certain dealers and other financial intermediaries that satisfy certain criteria established from time to time by the Distributor. Payments may vary based on sales, the amount of assets a dealer’s or intermediary’s clients have invested in the Fund, and other factors. These payments may also take the form of sponsorship of seminars or informational meetings or payments for attendance by persons associated with a dealer or intermediary at informational meetings. The Distributor and its affiliates may also make payments for recordkeeping and processing-related services to financial intermediaries that sell Fund shares. These payments may be in addition to payments made by each Fund for similar services.The payments described in this section, which may be significant to the dealers and the financial intermediaries, may create an incentive for a dealer or financial intermediary or their representatives to recommend or sell shares of a particular fund or share class over other mutual funds or share classes. Additionally, these payments may result in the Funds receiving certain marketing or servicing advantages that are not generally available to mutual funds that do not make such payments, including placement on a sales list, including a preferred or select sales list, or in other sales programs. These payments, which are in addition to any amounts you may pay your dealer or other financial intermediary, may create potential conflicts of interest between an investor and a dealer or other financial intermediary who is recommending a particular mutual fund over other mutual funds. Before investing, you should consult with your financial representative and review carefully any disclosure by the dealer or other financial intermediary as to what monies it receives from mutual funds and their advisers and distributors, as well as how your financial representative is compensated. Please see the SAI for additional information about payments made by the Distributor and its affiliates to dealers and intermediaries. It’s Easy to Open an Account To Open an Account with Natixis Funds:1.   Read this Prospectus carefully. Each Fund is generally available for purchase in the U.S., Puerto Rico, Guam and the U.S. Virgin Islands. Except to the extent otherwise permitted by the Distributor, the Funds will only accept accounts from U.S. citizens with a U.S. address or resident aliens with a U.S. address and a U.S. taxpayer identification number.

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Fund Services 2.   Determine how much you wish to invest. See the information regarding investment minimums for various types of accounts in the section “Purchase and Sale of Fund Shares.”3.   You should contact Natixis Funds at 800-225-5478 for an application or if you have any questions about purchasing Fund shares.4.   Use the sections of this Prospectus that follow as your guide for purchasing shares. CertificatesCertificates will not be issued or honored for any class of shares.

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Fund Services Buying SharesExcept to the extent otherwise permitted by the Distributor, the Funds will only accept investments from U.S. citizens with a U.S. address or resident aliens with a U.S. address and a U.S. taxpayer identification number.

	Opening an Account	Adding to an Account
Through Your Investment Dealer	•Call your investment dealer for information about opening or adding to an account. Dealers may also charge you a processing or service fee in connection with the purchase of Fund shares.
By Mail	•Make out a check in U.S. dollars for the investment amount, payable to “Natixis Funds.” Third party checks, “starter” checks and credit card convenience checks will not be accepted. •Mail the check with your completed application to Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, or the overnight address, 330 West 9th Street, Kansas City, MO 64105-1514. •Investments made by check are redeemable although the Fund may withhold payment until the purchase check has cleared. See the section “Selling Restrictions.”	•Make out a check in U.S. dollars for the investment amount, payable to “Natixis Funds.” Third party checks, “starter” checks and credit card convenience checks will not be accepted. •Complete the investment slip from an account statement or include a letter specifying the Fund name, your class of shares, your account number and the registered account name(s). •Investments made by check are redeemable although the Fund may withhold payment until the purchase check has cleared. See the section “Selling Restrictions.”
By Exchange (See the section “Exchanging Shares” for more details.)	•Call your investment dealer or Natixis Funds at 800-225-5478 or visit ga.natixis.com to 1) obtain a current prospectus for the Fund into which you are exchanging and 2) request an exchange.	•Call your investment dealer or Natixis Funds at 800-225-5478 or visit ga.natixis.com to request an exchange.
By Wire	•Mail your completed application to Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579. •Call Natixis Funds to obtain an account number and wire transfer instructions. Your bank may charge you for such a transfer.	•Instruct your bank to transfer funds to State Street Bank & Trust Company, ABA #011000028, and DDA #99011538.•Specify the Fund name, your class of shares, your account number and the registered account name(s). Your bank may charge you for such a transfer.
Through Automated Clearing House (“ACH”)	•Although you cannot open an account through ACH, you may add this feature by selecting it on your account application. •Ask your bank or credit union whether it is a member of the ACH system.	•Call Natixis Funds at 800-225-5478 to add shares to your account through ACH. •If you have not signed up for the ACH system, please call Natixis Funds (or visit ga.natixis.com) for a Service Options Form. A medallion signature guarantee may be required. •Redemption proceeds may not be available immediately upon redemption for shares purchased through ACH. See the section “Selling Restrictions.”
Automatic Investing Through Investment Builder	•Although you cannot open an account through Investment Builder, you may add this feature by selecting it on your account application. The fund minimum must be met to establish an account. •Ask your bank or credit union whether it is a member of the ACH system.	•If you have not signed up for Investment Builder, please call Natixis Funds at 800-225-5478 or visit ga.natixis.com for a Service Options Form. A medallion signature guarantee may be required. •Redemption proceeds may not be available immediately upon redemption for shares purchased through ACH. See the section “Selling Restrictions.”

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Fund ServicesSelling Shares To Sell Some or All of Your SharesCertain restrictions may apply. Redemption proceeds may not be available immediately upon redemption for shares purchased by check, through ACH or Investment Builder. See the section “Restrictions on Buying, Selling and Exchanging Shares.” Generally, a transaction fee will be charged for expedited payment of redemption proceeds of $5.50 for wire transfers, $50 for international wire transfers or $20.50 for overnight delivery. These fees are subject to change.

Through Your Investment Dealer	•Call your investment dealer for information. Dealers may also charge you a processing or service fee in connection with the redemption of Fund shares.
By Mail	•Write a letter to request a redemption. Specify the name of your fund, class of shares, account number, the exact registered account name(s), the number of shares or the dollar amount to be redeemed and the method by which you wish to receive your proceeds. Additional materials may be required. See the section “Selling Shares in Writing.” •The request must be signed by all of the owners of the shares and must include the capacity in which they are signing, if appropriate. •Mail your request by regular mail to Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579 or by registered, express or certified mail to Natixis Funds, 330 West 9th Street, Kansas City, MO 64105-1514. •Your proceeds will be delivered by the method chosen in your letter. Proceeds delivered by mail will generally be mailed to you within three business days after the request is received in good order, although it may take longer. See the sections “Selling Shares in Writing” and “Selling Restrictions.”
By Exchange (See the section “Exchanging Shares” for more details.)	•Obtain a current prospectus for the fund into which you are exchanging by calling your investment dealer or Natixis Funds at 800-225-5478 or visit ga.natixis.com. •Call Natixis Funds or visit ga.natixis.com to request an exchange.
By Wire	•Complete the “Bank Information” section on your account application. •Call Natixis Funds at 800-225-5478 or indicate in your redemption request letter (see above) that you wish to have your proceeds wired to your bank. •Proceeds will generally be wired on the next business day, although it may take longer. See the sections “Selling Shares in Writing” and “Selling Restrictions.” A wire fee will be deducted from the proceeds. Your bank may charge you a fee to receive the wire.
Through ACH	•Ask your bank or credit union whether it is a member of the ACH system. •Complete the “Bank Information” section on your account application. •If you have not signed up for the ACH system on your application, please call Natixis Funds at 800-225-5478 or visit ga.natixis.com for a Service Options Form. A medallion signature guarantee may be required. •Call Natixis Funds or visit ga.natixis.com to request an ACH redemption or indicate in your redemption letter that you wish to have your proceeds sent to your bank through ACH. •Proceeds will generally arrive at your bank within three business days, although it may take longer. See the sections “Selling Shares in Writing” and “Selling Restrictions.”
By Telephone	•Call Natixis Funds at 800-225-5478 to choose the method you wish to use to redeem your shares. You may receive your proceeds by mail, by wire or through ACH (see above), subject to certain restrictions. See the sections “Selling Shares in Writing” and “Selling Restrictions.”
By Systematic Withdrawal Plan	•Call Natixis Funds at 800-225-5478 or your financial representative for more information. •Because withdrawal payments may have tax consequences, you should consult your tax adviser before establishing such a plan. See the sections “Selling Shares in Writing” and “Selling Restrictions.”

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Fund ServicesSelling Shares in Writing If you wish to redeem your shares in writing, all owners of the shares must sign the redemption request in the exact names in which the shares are registered and indicate any special capacity in which they are signing. In certain situations, you will be required to make your request to sell shares in writing. In these instances, a letter of instruction signed by the authorized owner is necessary. In certain situations, we also may require a medallion signature guarantee or additional documentation.A medallion signature guarantee protects you against fraudulent orders and is necessary if:

• your address of record or bank account information has been changed within the past 30 days;
• you are selling more than $100,000 worth of shares and you are requesting the proceeds by check (this does not apply to IRA transfer of assets to a new custodian);
• a proceeds check for any amount is either mailed to an address other than the address of record or not payable to the registered owner(s); or
• the proceeds are sent by check, wire or in some circumstances ACH to a bank account whose owner(s) do not match the owner(s) of the fund account.

A notary public cannot provide a medallion signature guarantee. The Funds will only accept medallion signature guarantees bearing the STAMP2000 Medallion imprint. A medallion signature guarantee can be obtained from one of the following sources:

• a financial representative or securities dealer;
• a federal savings bank, cooperative or other type of bank;
• a savings and loan or other thrift institution;
• a credit union; or
• a securities exchange or clearing agency.

In some situations additional documentation may be necessary. Please contact your financial representative or Natixis Funds regarding documentation requirements. Exchanging SharesYou may exchange Class Y shares of a Fund, subject to minimum investment requirements, for Class Y shares of any Natixis Fund that offers Class Y shares or for Institutional Class shares of any series of Loomis Sayles Funds that offers Institutional Class shares subject to certain restrictions noted below. The exchange must be for at least the minimum to open an account or the total NAV of your account, whichever is less. All exchanges are subject to the eligibility requirements of the fund into which you are exchanging and any other limits on sales of or exchanges into that fund. The exchange privilege may be exercised only in those states where shares of such funds may be legally sold. For U.S. federal income tax purposes, an exchange of fund shares for shares of another fund is generally treated as a sale on which gain or loss may be recognized. Subject to the applicable rules of the SEC, the Board of Trustees reserves the right to modify the exchange privilege at any time. Before requesting an exchange into any other fund, please read its prospectus carefully. You may be unable to hold your shares through the same financial intermediary if you engage in certain share exchanges. You should contact your financial intermediary for further details. Please refer to the SAI for more detailed information on exchanging Fund shares.In certain limited circumstances, accounts participating in wrap fee programs or held through a registered investment adviser may exchange Class Y shares of a Fund for Class A shares of the same Fund. Class Y shares may be converted to Class A shares of the same Fund if the Class Y shares are held in an investment option or program that no longer permits the use of Class Y shares in that option or program or if the shareholder otherwise becomes ineligible to participate in Class Y shares. Exchanges from Class Y shares to Class A shares will not be subject to an initial sales charge; however, future purchases may be subject to a sales charge, if applicable. A representative of the wrap fee program or a registered investment adviser must provide a completed cross-share exchange form and written notice to the Distributor indicating that a Class Y shareholder is eligible for conversion to Class A shares prior to any such exchange.

Accounts participating in or moving into wrap fee programs or held through a registered investment adviser may exchange Class A shares of a fund for Class Y shares of the same fund and Class C shares of a fund for Class Y shares of the same fund. In order to exchange shares, a representative of the wrap fee program or a registered investment adviser must contact the Distributor in advance and follow the procedures set forth by the Distributor. Any account with an outstanding CDSC liability will be assessed the CDSC before converting to Class Y. An exchange of shares for shares of a different class in the same fund generally should not be a taxable event for the exchanging shareholder.Class A shares of a fund acquired by Fund trustees, former Fund trustees, employees of affiliates of the Natixis Funds, individuals who are affiliated with any Natixis Fund (including spouses, parents, siblings, grandparents, grandchildren and in-laws of those mentioned) and Natixis and Natixis affiliate benefit plans (collectively, “Natixis affiliated shareholders”) may be exchanged for Class Y shares of the same fund without payment of a CDSC.Due to operational limitations at your financial intermediary, your ability to exchange between shares classes of the same fund may be limited. Please consult your financial representative for more information.

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Fund ServicesRestrictions on Buying, Selling and Exchanging SharesThe Funds discourage excessive short-term trading that may be detrimental to the Funds and their shareholders. Frequent purchases and redemptions of Fund shares by shareholders may present certain risks for other shareholders in a Fund. This includes the risk of diluting the value of Fund shares held by long-term shareholders, interfering with the efficient management of each Fund’s portfolio and increasing brokerage and administrative costs. Funds investing in securities that require special valuation processes (such as foreign securities, high yield securities or small cap securities), also may have increased exposure to these risks. The Board of Trustees has adopted the following policies to address and discourage such trading.Each Fund reserves the right to suspend or change the terms of purchasing or exchanging shares. Each Fund and the Distributor reserve the right to reject any purchase or exchange order for any reason, including if the transaction is deemed not to be in the best interests of the Fund’s other shareholders or possibly disruptive to the management of the Fund. A shareholder whose exchange order has been rejected may still redeem its shares by submitting a redemption request as described under “Selling Shares.”Limits on Frequent Trading. Without limiting the right of each Fund and the Distributor to reject any purchase or exchange order, each Fund and the Distributor may (but are not obligated to) restrict purchases and exchanges for the accounts of “market timers.” An account may be deemed to be one of a market timer if it makes two “round trips” in any Fund over a 90-day interval, as determined by the Fund. A “round trip” is a purchase (including a purchase by exchange) into a Fund followed by a redemption (including a redemption by exchange) of any amount out of the same Fund. The above limits are applicable whether you hold shares directly with a Fund or indirectly through a financial intermediary, such as a broker, bank, investment adviser, recordkeeper for retirement plan participants, or other third party. The preceding is not an exclusive description of activities that the Funds and the Distributor may consider to be “market timing.”Notwithstanding the above, certain financial intermediaries, such as retirement plan administrators, may monitor and restrict the frequency of purchase and redemption transactions in a manner different from that described above. The policies of these intermediaries may be more or less restrictive than the generally applicable policies described above. Each Fund may choose to rely on a financial intermediary’s restrictions on frequent trading in place of the Fund’s own restrictions if the Fund determines, at its discretion, that the financial intermediary’s restrictions provide reasonable protection for the Fund from excessive short-term trading activity. Please contact your financial representative for additional information regarding their policies for limiting the frequent trading of Fund shares.This policy also does not apply with respect to shares purchased by certain funds-of-funds or similar asset allocation programs that rebalance their investments only infrequently. To be eligible for this exemption, the fund-of-funds or asset allocation program must identify itself to and receive prior written approval from a Fund or the Distributor. A Fund and Distributor may request additional information to enable them to determine that the fund-of-funds or asset allocation program is not designed to and/or is not serving as a vehicle for disruptive short-term trading, which may include requests for (i) written assurances from the sponsor or investment manager of the fund-of-funds or asset allocation program that it enforces the Fund’s frequent trading policy on investors or another policy reasonably designed to deter disruptive short-term trading in Fund shares, and/or (ii) data regarding transactions by investors in the fund-of-funds or asset allocation program, for periods and on a frequency determined by the Fund and Distributor, so that the Fund can monitor compliance by such investors with the trading limitations of the Fund or of the fund-of-funds or asset allocation program.Trade Activity Monitoring. Trading activity is monitored selectively on a daily basis in an effort to detect excessive short-term trading activities. If a Fund or the Distributor believes that a shareholder or financial intermediary has engaged in market timing or other excessive short-term trading activity, it may, at its discretion, request that the shareholder or financial intermediary stop such activities or refuse to process purchases or exchanges in the accounts. At its discretion, a Fund or the Distributor may restrict or prohibit transactions by such identified shareholders or intermediaries. In making such judgments, a Fund and the Distributor seek to act in a manner that they believe is consistent with the best interests of all shareholders. A Fund and the Distributor also reserve the right to notify financial intermediaries of the shareholder’s trading activity.Accounts Held by Financial Intermediaries. The ability of a Fund and the Distributor to monitor trades that are placed by omnibus or other nominee accounts is more limited in those instances in which the financial intermediary maintains the record of a Fund’s underlying beneficial owners. In general, each Fund and the Distributor will review trading activity at the omnibus account level. If a Fund and the Distributor detect suspicious activity, they may request and receive personal identifying information and transaction histories for some or all underlying shareholders (including plan participants) to determine whether such shareholders have engaged in market timing or other excessive short-term trading activity. If a Fund believes that a shareholder has engaged in market timing or other excessive short-term trading activity in violation of the Fund’s policies through an omnibus account, the Fund will attempt to limit transactions by the underlying shareholder which engaged in such trading, although it may be unable to do so. A Fund may also limit or prohibit additional purchases of Fund shares by an intermediary. Investors should not assume a Fund will be able to detect or prevent all market timing or other trading practices that may disadvantage a Fund. Purchase RestrictionsEach Fund is required by federal regulations to obtain certain personal information from you and to use that information to verify your identity. The Funds may not be able to open your account if the requested information is not provided. Each Fund reserves the right to refuse to open an account, close an account and redeem your shares at the then-current price or take other such steps that the Fund deems necessary to comply with federal regulations if your identity cannot be verified.

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Fund Services Selling RestrictionsThe table below describes restrictions placed on selling shares of a Fund. Please see the SAI for additional information regarding redemption payment policies:

Restriction	Situation
Each Fund may suspend the right of redemption or postpone payment for more than 7 days:	•When the New York Stock Exchange (the “NYSE”) is closed (other than a weekend/holiday) as permitted by the SEC. •During an emergency as permitted by the SEC. •During any other period permitted by the SEC.
Each Fund reserves the right to suspend account services or refuse transaction requests:	•With a notice of a dispute between registered owners or death of a registered owner. •With suspicion/evidence of a fraudulent act.
Each Fund may pay the redemption price in whole or in part by a distribution in kind of readily marketable securities in lieu of cash or may take up to 7 days to pay a redemption request in order to raise capital:	•When it is detrimental for a Fund to make cash payments as determined in the sole discretion of the adviser or subadviser.
Each Fund may withhold redemption proceeds for 10 days from the purchase date:	•When redemptions are made within 10 calendar days of purchase by check or ACH to allow the check or ACH transaction to clear.

Although most redemptions are made in cash, as described in the SAI, the Fund reserves the right to redeem shares in kind. If a shareholder receives a distribution in kind, the shareholder will bear the market risk associated with the distributed securities and may incur brokerage or other charges in converting the securities to cash. How Fund Shares Are Priced “Net asset value” is the price of one share of a Fund without a sales charge, and is calculated each business day using this formula:

Net Asset Value = Total market value of securities + Cash and other assets – Liabilities
Number of outstanding shares

The NAV of Fund shares is determined pursuant to policies and procedures approved by the Board of Trustees, as summarized below:

• A share’s NAV is determined at the close of regular trading on the NYSE on the days the NYSE is open for trading. This is normally 4:00 p.m., Eastern time. The Fund’s shares will not be priced on the days on which the NYSE is closed for trading. In addition, the Fund’s shares will not be priced on the holidays listed in the SAI. See the section “Net Asset Value” in the SAI for more details.
• The price you pay for purchasing, redeeming or exchanging a share will be based upon the NAV next calculated (plus or minus applicable sales charges as described earlier in the Fund Summary) after your order is received by the transfer agent “in good order.”¹
• Requests received by the Funds after the NYSE closes will be processed based upon the NAV determined at the close of regular trading on the next day that the NYSE is open. If the transfer agent receives the order in good order prior to market close (normally 4:00 p.m., Eastern time), the shareholder will receive that day’s NAV. Under limited circumstances, the Distributor may enter into contractual agreements pursuant to which orders received by your investment dealer before the Fund determines its NAV and transmitted to the transfer agent prior to market open on the next business day are processed at the NAV determined on the day the order was received by your investment dealer. Please contact your investment dealer to determine whether it has entered into such a contractual agreement. If your investment dealer has not entered into such a contractual agreement, your order will be processed at the NAV next determined after your investment dealer submits the order to the Fund.
• If a Fund invests in foreign securities, it may have NAV changes on days when you cannot buy or sell its shares.

1 Please see the section “Buying Shares,” which provides additional information regarding who can receive a purchase order.

Generally, during times of substantial economic or market change, it may be difficult to place your order by phone. During these times, you may deliver your order in person to the Distributor or send your order by mail as described in the sections “Buying Shares” and “Selling Shares.”

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Fund Services Generally, Fund securities are valued as follows:

• Equity securities—last sale price on the exchange or market where primarily traded or, if there is no reported sale during the day, the closing bid price.
• Debt securities (other than short-term obligations)—based upon evaluated prices furnished to a Fund by an independent pricing service, which service determines valuations for normal, institutional-size trading units of such securities using market information, transactions for comparable securities and various relationships between securities which are generally recognized by institutional traders.
• Short-term obligations (purchased with an original or remaining maturity of 60 days or less)—amortized cost (which approximates market value).
• Securities traded on foreign exchanges—market price on the foreign exchange, unless the Fund believes that an occurrence after the close of that exchange will materially affect the security’s value. In that case, the security may be fair-valued at the time the Fund determines its NAV by or pursuant to procedures approved by the Board of Trustees. When fair-valuing their securities, the Funds may, among other things, use modeling tools or other processes that may take into account factors such as securities market activity and/or significant events that occur after the close of the local market and before the time a Fund’s NAV is calculated.
• Swaps—market value based on prices supplied by a pricing service, if available, or quotations obtained from broker-dealers.
• Options—domestic exchange-traded single equity option contracts are valued at the mean of the National Best Bid and Offer quotations. Options on futures contracts are valued using the current settlement price. Other exchange-traded options are valued at the average of the closing bid and asked quotations. OTC options contracts are valued based on quotations obtained from broker-dealers. Under normal market conditions, the Funds will generally consider the value of domestic exchange-traded index options determined at the close of trading on the Chicago Board Options Exchange (the “CBOE”) (normally 4:15 p.m., Eastern time) to be the value at the close of the NYSE (normally 4:00 p.m., Eastern time). However, if under the Funds’ valuation procedures a significant change in the value of the S&P 500 contracts is considered to have occurred between the close of the NYSE and the close of the CBOE, the Funds will consider the closing price on the CBOE to not reflect the value of the index options at the close of the NYSE. In such circumstances the index options will be fair valued by or pursuant to procedures approved by the Board of Trustees. On the last business day of the month, the Gateway Fund will fair value index options using the closing rotation values published by the CBOE.
• Futures—unrealized gain or loss on the contract using current settlement price. When a settlement price is not used, futures contracts will be valued at their fair value as determined by or pursuant to procedures approved by the Fund’s Board of Trustees.
• Forward foreign currency contracts—interpolated prices determined based on information provided by an independent pricing service.
• All other securities—fair market value as determined by the adviser or subadviser pursuant to procedures approved by the Board of Trustees.

As described above, if market prices are not readily available for a security, securities may not be priced on the basis of quotations from the primary market in which they are traded but rather may be priced by another method that the Board of Trustees believes is more likely to result in a price that reflects fair value (which is the amount that a Fund might reasonably expect to receive from a current sale of the security in the ordinary course of business). A Fund may also value securities at fair value or estimate their values pursuant to procedures approved by the Board of Trustees in other circumstances such as when extraordinary events occur after the close of the relevant market but prior to the close of the NYSE. This may include situations relating to a single issuer (such as a declaration of bankruptcy or a delisting of the issuer’s security from the primary market on which it has traded) as well as events affecting the securities markets in general (such as market disruptions or closings and significant fluctuations in U.S. and/or foreign markets). Fair value pricing may require subjective determinations about the value of a security, and fair values used to determine the Fund’s NAV may differ from quoted or published prices, or from prices that are used by others, for the same securities. In addition, the use of fair value pricing may not always result in adjustments to the prices of securities held by the Fund. Dividends and DistributionsThe Funds generally distribute annually all or substantially all of their net investment income (other than capital gains) in the form of dividends. The following table shows when each Fund expects to distribute dividends. The Funds expect to distribute all or substantially all of their net realized long- and short-term capital gains annually, after applying any available capital loss carryovers. To the extent permitted by law, the Board of Trustees may adopt a different schedule for making distributions as long as payments are made at least annually.

Dividend Payment Schedule
Annually	Quarterly
ASG Diversifying Strategies Fund	Loomis Sayles Absolute Strategies Fund
ASG Global Alternatives Fund	Gateway Fund
ASG Managed Futures Strategy Fund
Loomis Sayles Multi-Asset Real Return Fund

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Fund ServicesDistributions will automatically be reinvested in shares of the same class of the distributing Fund at NAV, unless you select one of the following alternatives:

• Receive distributions from dividends and interest in cash while reinvesting distributions from capital gains in additional shares of the same class of a Fund, or in the same class of another Natixis Fund.
• Receive all distributions in cash.

If a dividend or capital gain distribution check remains uncashed for six months or is undeliverable by the United States Postal Service and your account is still open, the Fund will reinvest the dividend or distribution in additional shares of the Fund promptly after making this determination and the check will be canceled. In addition, future dividends and capital gains distributions will be automatically reinvested in additional shares of the Fund unless you subsequently contact the Fund and request to receive distributions by check.For more information or to change your distribution option, contact Natixis Funds in writing or call 800-225-5478.If you earn more than $10 annually in taxable income from a Natixis Fund held in a non-retirement plan account, you will receive a Form 1099 to help you report the prior calendar year’s distributions on your federal income tax return. This information will also be reported to the Internal Revenue Service (“IRS”). Be sure to keep this Form 1099 as a permanent record. A fee may be charged for any duplicate information requested. Tax ConsequencesExcept where noted, the discussion below addresses only the U.S. federal income tax consequences of an investment in the Funds and does not address any foreign, state or local tax consequences.Each Fund intends to meet all requirements under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”), necessary to qualify each year for treatment as a “regulated investment company” and thus does not expect to pay any federal income tax on income and capital gains that are timely distributed to shareholders.Taxation of Distributions from the Funds. For federal income tax purposes, distributions of investment income are generally taxable to Fund shareholders as ordinary income. Taxes on distributions of capital gains are determined by how long a Fund owned the investments that generated them, rather than how long a shareholder has owned his or her shares. Distributions attributable to the excess of net long-term capital gains from the sale of investments a Fund owned for more than one year over net short-term capital losses and that are properly reported by the Fund as capital gain dividends (“Capital Gain Dividends”) will generally be taxable to a shareholder receiving such distributions as long-term capital gain. Distributions attributable to the excess of net short-term capital gains from the sale of investments that a Fund owned for one year or less over net long-term capital losses will be taxable as ordinary income.For taxable years beginning before January 1, 2013, distributions of investment income properly reported by a Fund as derived from “qualified dividend income” will be taxed in the hands of individuals at the rates applicable to long-term capital gain, provided holding period and other requirements are met at both the shareholder and Fund levels. Income generated by investments in fixed-income securities, derivatives and REITs generally is not eligible for treatment as qualified dividend income.For taxable years beginning before January 1, 2013, long-term capital gain rates applicable to individuals have been reduced, in general to 15%, with a 0% rate applying to taxpayers in the 10% and 15% rate brackets. It is currently unclear whether Congress will extend these long-term capital gain rates and the special treatment of qualified dividend income for taxable years beginning on or after January 1, 2013.Fund distributions are taxable whether shareholders receive them in cash or in additional shares. In addition, Fund distributions are taxable to shareholders even if they are paid from income or gains earned by a Fund before a shareholder’s investment (and thus were included in the price the shareholder paid for his or her shares). Such distributions may occur in respect of shares purchased at a time when a Fund’s NAV reflects gains that are either unrealized or realized but not distributed.Dividends and distributions declared by a Fund in October, November or December of one year and paid in January of the next taxable year generally are taxable in the year in which the distributions are declared, rather than the year in which the distributions are received.Dividends derived from interest on securities issued by the U.S. government or its agencies or instrumentalities, if any, may be exempt from state and local income taxes. Each Fund will advise shareholders annually of the proportion of its dividends that are derived from such interest.Distributions by a Fund to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax laws generally will not be taxable, although distributions by retirement plans to their participants may be taxable. Special tax rules apply to investments through such retirement plans. If your investment is through such a plan, you should consult your tax adviser to determine the suitability of the Funds as an investment through your plan and the tax treatment of distributions to you (including distributions of amounts attributable to an investment in a Fund) from the plan.Redemption, Sale or Exchange of Fund Shares. A redemption, sale or exchange of Fund shares (including an exchange of Fund shares for shares of another Natixis Fund or Loomis Sayles Fund) is a taxable event and will generally result in recognition of gain or loss. Gain or loss, if any, recognized by a shareholder on a redemption, sale, exchange or other disposition of Fund shares will generally be taxed as long-term capital gain or loss if the

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Fund Services shareholder held the shares for more than one year, and as short-term capital gain or loss if the shareholder held the shares for one year or less, assuming in each case that the shareholder held the shares as capital assets. Short-term capital gains are generally taxed at the rates applicable to ordinary income. Any loss realized upon a disposition of shares held for six months or less will be treated as long-term, rather than short-term, capital loss to the extent of any Capital Gain Dividends received by the shareholder with respect to the shares. The deductibility of capital losses is subject to limitations. Taxation of Certain Fund Investments. A Fund’s investments in foreign securities may be subject to foreign withholding or other taxes. In that case, the Fund’s yield on those securities would be decreased. Each Fund generally does not expect that its shareholders will be entitled to claim a credit or deduction with respect to foreign taxes incurred by the Fund. In addition, a Fund’s investments in foreign securities or foreign currencies may be subject to special tax rules that have the effect of increasing or accelerating the Fund’s recognition of ordinary income and may affect the timing or amount of the Fund’s distributions to shareholders.A Fund’s investments in certain debt obligations, derivatives or REITs may cause the Fund to recognize taxable income in excess of the cash generated by such investments. Thus, a Fund could be required to liquidate investments, including at times when it is not advantageous to do so, in order to satisfy the distribution requirements applicable to regulated investment companies under the Code.A Fund’s ability to invest directly in commodities and commodities-related investments is limited by the requirement that at least 90 percent of a regulated investment company’s income must consist of certain types of “qualifying income.” Accordingly, each of ASG Diversifying Strategies Fund, ASG Global Alternatives Fund, ASG Managed Futures Strategy Fund and Loomis Sayles Multi-Asset Real Return Fund has invested, and intends to continue to invest, in a wholly-owned Cayman Islands subsidiary that will in turn make such investments. Each of these Funds has obtained a private letter ruling from the IRS to the effect that income of its subsidiary that is attributed to the Fund will be qualifying income.Backup Withholding. Each Fund is required in certain circumstances to apply backup withholding on taxable dividends, redemption proceeds and certain other payments that are paid to any shareholder if the shareholder does not furnish to the Fund certain information and certifications or the shareholder is otherwise subject to backup withholding. The backup withholding tax rate is 28% for amounts paid on or before December 31, 2012 and will be 31% for amounts paid after December 31, 2012.Please see the SAI for additional information on the U.S. federal income tax consequences of investing in the Funds. You should consult your tax adviser for more information on your own situation, including possible federal, state, local, foreign or other applicable taxes. Financial PerformanceThe financial highlights tables are intended to help you understand each Fund’s financial performance for the period of each Fund’s operations. Certain information reflects financial results for a single Fund share. The total returns in the table represent the return that an investor would have earned (or lost) on an investment in the Fund (assuming reinvestment of all dividends and distributions). This information has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, whose report, along with each Fund’s financial statements, is included in each Fund’s annual report to shareholders. The annual reports are incorporated by reference into the SAI, both of which are available free of charge upon request from the Distributor.

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Financial Performance For a share outstanding throughout each period.

		Income (Loss) from Investment Operations:			Less Distributions:						Ratios to Average Net Assets:
	Net asset value, beginning of the period	Net investment loss(a)	Net realized and unrealized gain	Total from investment operations	Dividends from net investment income	Distributions from net realized capital gains	Total distributions	Net asset value, end of the period	Total return (%)(b)	Net assets, end of period (000’s)	Net expenses, excluding interest expense (%)(c)(d)	Gross expenses, excluding interest expense (%)(d)	Net expenses, including interest expense (%)(c)(d)	Gross expenses, including interest expense (%)(d)	Net investment loss(%)(d)	Portfolio turnover rate(%)(e)
ASG DIVERSIFYING STRATEGIES FUND
Class Y
12/31/2010	$10.19	$(0.13)	$1.01(f)	$0.88	$(0.16)	$(0.45)	$(0.61)	$10.46	8.63	$173,034	1.45	1.91	1.49	1.94	(1.21)	—
12/31/2009(g)	10.00	(0.05)	0.78	0.73	(0.10)	(0.44)	(0.54)	10.19	7.29	19,549	1.45	5.09	1.47	5.11	(1.22)	—

(a)	Per share net investment loss has been calculated using the average shares outstanding during the period.
(b)	Had certain expenses not been waived/reimbursed during the period, if applicable, total returns would have been lower. Periods less than one year, if applicable, are not annualized.
(c)	The investment adviser agreed to waive its fees and/or reimburse a portion of the Fund’s expenses during the period. Without this waiver/reimbursement, if applicable, expenses would have been higher.
(d)	Computed on an annualized basis for periods less than one year, if applicable.
(e)	Due to the short-term nature of the portfolio of investments there is no portfolio turnover calculation.
(f)	The amount shown for a share outstanding does not correspond with the aggregate realized and unrealized gain on investments for the period due to the timing of sales and redemptions of fund shares in relation to fluctuating market values of investments of the Fund.
(g)	For the period August 3, 2009 (inception) through December 31, 2009.

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Financial Performance For a share outstanding throughout each period.

		Income (Loss) from Investment Operations:			Less Distributions:						Ratios to Average Net Assets:
	Net asset value, beginning of the period	Net investment income (loss) (a)	Net realized and unrealized gain (loss)	Total from investment operations	Dividends from net investment income(b)	Distributions from net realized capital gains	Total distributions	Net asset value, end of the period	Total return (%)(c)	Net assets, end of period (000’s)	Net expenses, excluding interest expense (%)(d)(e)	Gross expenses, excluding interest expense (%)(e)	Net expenses, including interest expense (%)(d)(e)	Gross expenses, including interest expense (%)(e)	Net investment income (loss) (%)(e)	Portfolio turnover rate(%)(f)
ASG GLOBAL ALTERNATIVES FUND
Class Y*
12/31/2010	$10.41	$(0.11)	$0.86	$0.75	$(0.00)	$(0.44)	$(0.44)	$10.72	7.22	$343,236	1.35	1.41	1.36	1.42	(1.03)	—
12/31/2009	9.70	(0.09)	0.98	0.89	(0.13)	(0.05)	(0.18)	10.41	9.10	112,591	1.35	1.98	1.36	2.00	(0.90)	—
12/31/2008(g)	10.00	0.04	(0.30)	(0.26)	(0.04)	—	(0.04)	9.70	(2.60)	24,523	1.35	4.43	1.39	4.46	1.59	—

* Prior to December 1, 2008, the Fund offered Institutional Class Shares. On December 1, 2008, Institutional Class shares were redesignated as Class Y shares.

(a)	Per share net investment income (loss) has been calculated using the average shares outstanding during the period.
(b)	Amount rounds to less than $0.01 per share, if applicable.
(c)	Had certain expenses not been waived/reimbursed during the period, if applicable, total returns would have been lower. Periods less than one year, if applicable, are not annualized.
(d)	The investment adviser agreed to waive its fees and/or reimburse a portion of the Fund’s expenses during the period. Without this waiver/reimbursement, if applicable, expenses would have been higher.
(e)	Computed on an annualized basis for periods less than one year, if applicable.
(f)	Due to the short-term nature of the portfolio of investments there is no portfolio turnover calculation.
(g)	For the period September 30, 2008 (inception) through December 31, 2008.

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Financial Performance For a share outstanding throughout each period.

		Income (Loss) from Investment Operations:			Less Distributions:						Ratios to Average Net Assets:
	Net asset value, beginning of the period	Net investment loss(a)	Net realized and unrealized gain	Total from investment operations	Dividends from net investment income	Distributions from net realized capital gains	Total distributions	Net asset value, end of the period	Total return (%)(b)	Net assets, end of period (000’s)	Net expenses, excluding interest expense (%)(c)(d)	Gross expenses, excluding interest expense (%)(d)	Net expenses, including interest expense (%)(c)(d)	Gross expenses, including interest expense (%)(d)	Net investment loss(%)(d)	Portfolio turnover rate(%)(e)
ASG MANAGED FUTURES STRATEGY FUND
Class Y
12/31/2010(f)	$10.00	$(0.06)	$1.40	$1.34	$(0.34)	$(0.40)	$(0.74)	$10.60	13.39	$49,803	1.45	2.65	1.48	2.68	(1.20)	—

(a)	Per share net investment loss has been calculated using the average shares outstanding during the period.
(b)	Had certain expenses not been waived/reimbursed during the period, if applicable, total returns would have been lower. Periods less than one year, if applicable, are not annualized.
(c)	The investment adviser agreed to waive its fees and/or reimburse a portion of the Fund’s expenses during the period. Without this waiver/reimbursement, if applicable, expenses would have been higher.
(d)	Computed on an annualized basis for periods less than one year, if applicable.
(e)	Due to the short-term nature of the portfolio of investments there is no portfolio turnover calculation.
(f)	For the period July 30, 2010 (inception) through December 31, 2010.

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Financial Performance For a share outstanding throughout each period.

		Income (Loss) from Investment Operations:			Less Distributions:						Ratios to Average Net Assets:
	Net asset value, beginning of the period	Net investment income (a)	Net realized and unrealized gain (loss)	Total from investment operations	Dividends from net investment income	Distributions from net realized capital gains	Total distributions	Net asset value, end of the period	Total return(%)(b)	Net assets, end of period (000’s)	Net expenses(%)(c)(d)	Gross expenses(%)(c)	Net investment income (%)(c)	Portfolio turnover rate(%)
GATEWAY FUND
Class Y
12/31/2010	$25.24	$0.47	$0.81	$1.28	$(0.46)	$—	$(0.46)	26.06	$5.13	2,520,386	0.70	0.80	1.86	7
12/31/2009	24.17	0.54	1.06	1.60	(0.53)	—	(0.53)	25.24	6.83	1,659,385	0.70	0.78	2.25	11
12/31/2008*	27.76	0.56	(3.56)	(3.00)	(0.59)	—	(0.59)	24.17	(11.03)	1,402,090	0.70	0.78	2.45	38

*	From commencement of Class operations on February 19, 2008 through December 31, 2008.
(a)	Per share net investment income has been calculated using the average shares outstanding during the period.
(b)	Had certain expenses not been waived/reimbursed during the period, if applicable, total returns would have been lower. Periods less than one year, if applicable, are not annualized.
(c)	Computed on an annualized basis for periods less than one year, if applicable.
(d)	The investment adviser and/or administrator agreed to waive its fees and/or reimburse a portion of the Fund’s expenses during the period. Without this waiver/reimbursement, if applicable, expenses would have been higher.

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Financial Performance For a share outstanding throughout each period.

		Income from Investment Operations:			Less Distributions:						Ratios to Average Net Assets:
	Net asset value, beginning of the period	Net investment income(a)(b)	Net realized and unrealized gain	Total from investment operations	Dividends from net investment income(b)	Distributions from net realized capital gains	Total distributions(b)	Net asset value, end of the period	Total return(%)(c)	Net assets, end of period (000’s)	Net expenses(%)(d)(e)	Gross expenses (%)(e)	Net investment income (%)(e)	Portfolio turnover rate(%)
LOOMIS SAYLES ABSOLUTE STRATEGIES FUND
Class Y
12/31/2010(f)	$10.00	$0.00	$0.05	$0.05	$(0.00)	$—	$(0.00)	$10.05	0.41	$26,758	1.05	5.37	0.06	39

(a)	Per share net investment income has been calculated using the average shares outstanding during the period.
(b)	Amount rounds to less than $0.01 per share, if applicable.
(c)	Had certain expenses not been waived/reimbursed during the period, if applicable, total returns would have been lower. Periods less than one year, if applicable, are not annualized.
(d)	The investment adviser agreed to waive its fees and/or reimburse a portion of the Fund’s expenses during the period. Without this waiver/reimbursement, if applicable, expenses would have been higher.
(e)	Computed on an annualized basis for periods less than one year, if applicable.
(f)	For the period December 15, 2010 (inception) through December 31, 2010.

79

Financial Performance For a share outstanding throughout each period.

		Income from Investment Operations:			Less Distributions:						Ratios to Average Net Assets:
	Net asset value, beginning of the period	Net investment income(a)	Net realized and unrealized gain	Total from investment operations	Dividends from net investment income	Distributions from net realized capital gains	Total distributions	Net asset value, end of the period	Total return(%)(b)	Net assets, end of period (000’s)	Net expenses(%)(c)(d)	Gross expenses (%)(d)	Net investment income (%)(d)	Portfolio turnover rate(%)
LOOMIS SAYLES MULTI-ASSET REAL RETURN FUND
Class Y
12/31/2010(e)	$10.00	$0.06	$0.15	$0.21	$(0.08)	$—	$(0.08)	$10.13	2.12	$27,528	1.10	2.98	2.25	139

(a)	Per share net investment income has been calculated using the average shares outstanding during the period.
(b)	Had certain expenses not been waived/reimbursed during the period, if applicable, total returns would have been lower. Periods less than one year, if applicable, are not annualized.
(c)	The investment adviser agreed to waive its fees and/or reimburse a portion of the Fund’s expenses during the period. Without this waiver/reimbursement, if applicable, expenses would have been higher.
(d)	Computed on an annualized basis for periods less than one year, if applicable.
(e)	For the period September 30, 2010 (inception) through December 31, 2010.

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Glossary of TermsAdjusted notional value — The adjusted notional value of a derivative is the notional value of that derivative as multiplied by a ratio that reflects how a change in the value of a derivative moves in relation to a change in the value of the underlying reference asset and, as such, may more accurately measure a Fund’s real economic exposure to that derivative. Bottom-up approach — The analysis of potential performance of individual stocks before considering the impact of economic trends. Such companies may be identified from research reports, stock screens or personal knowledge of the products and services. Credit default swaps — Credit derivative contracts between two counterparties, in which a “buyer” of protection makes periodic payments to a “seller” in return for seller’s obligation to make a payment to buyer in the case of default of an underlying credit instrument or instruments. Credit default swaps may be used to provide protection with respect to individual securities or baskets of securities.Derivative — A financial instrument whose value and performance are based on the value and performance of another security, asset, index or financial instrument. Diversification — The strategy of investing in a wide range of companies or securities representing different market sectors to reduce the risk if an individual company or one sector suffers losses. Equity Securities — Securities that may include common stocks, preferred stocks, warrants, securities convertible into common and preferred stocks and other equity-like interests in an entity.Inflation — A general increase in prices coinciding with a fall in the real value of money, as measured by the Consumer Price Index. Interest rate — Rate of interest charged for the use of money, usually expressed at an annual rate. Market capitalization — Market price multiplied by number of shares outstanding. Whether a company is considered a “large,” “medium” or “small” capitalization company for a fund will depend upon the company’s market capitalization at the time of measurement and the index being used and/or the guidelines used by the portfolio manager.Maturity — The final date on which the payment of a debt instrument (e.g., bonds, notes, repurchase agreements) becomes due and payable. Short-term bonds generally have maturities of up to 5 years; intermediate-term bonds between 5 and 15 years; and long-term bonds over 15 years. Net assets — A fund’s assets minus its liabilities. With respect to funds that have a policy to invest 80% of their net assets in particular kinds of securities, “net assets” as used in such policies means net assets plus borrowings made for investment purposes. Net asset value (NAV) per share — The market value of one share of a fund on any given day without taking into account any front-end sales charge or contingent deferred sales charge. It is determined by dividing a fund’s total net assets by the number of shares outstanding.Notional value — Notional value is the nominal or face amount used to calculate payments on the derivative products that are held by a fund. The notional value of the securities underlying a derivative often differs from the derivative’s market value. Rule 144A securities — Rule 144A securities are privately offered securities that can be resold only to certain qualified institutional buyers. Rule 144A securities are treated as illiquid, unless a manager has determined, under guidelines established by a fund’s trustees, that a particular issue of Rule 144A securities is liquid. Structured notes — Structured notes are debt obligations whose principal and/or interest payments are determined by reference to changes in some external factor or factors, such as an interest rate or a commodities or securities index.Swap agreements — Swap agreements are unregulated, individually negotiated contracts between two parties who agree to exchange for a specified period of time two streams of payments that would be earned or realized on particular notional investments or instruments. In a credit default swap, one party agrees to make periodic payments to a counterparty, in exchange for the right to receive a payment in the event of default of the underlying reference security.Volatility — The general variability of a fund’s value resulting from price fluctuations of its investments. Yield — The rate at which a fund earns income, expressed as a percentage. Mutual fund yield calculations are standardized, based upon a formula developed by the SEC.

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If you would like more information about the Funds, the following documents are available free upon request:Annual and Semiannual Reports—Provide additional information about each Fund’s investments. Each report includes a discussion of the market conditions and investment strategies that significantly affected the Fund’s performance during its last fiscal year.Statement of Additional Information (SAI)—Provides more detailed information about the Funds and their investment limitations and policies. The SAI has been filed with the SEC and is incorporated into this Prospectus by reference.For a free copy of the Funds’ annual or semiannual report or their SAI, to request other information about the Funds, and to make shareholder inquiries generally, contact your financial representative, visit the Funds’ website at ga.natixis.com or call the Funds at 800-225-5478.Important Notice Regarding Delivery of Shareholder Documents:In our continuing effort to reduce your fund’s expenses and the amount of mail that you receive from us, we will combine mailings of prospectuses, annual or semiannual reports and proxy statements to your household. If more than one family member in your household owns the same fund or funds described in a single prospectus, report or proxy statement, you will receive one mailing unless you request otherwise. Additional copies of our prospectuses, reports or proxy statements may be obtained at any time by calling 800-225-5478. If you are currently receiving multiple mailings to your household and would like to receive only one mailing or if you wish to receive separate mailings for each member of your household in the future, please call us at the telephone number listed above and we will resume separate mailings within 30 days of your request.Your financial representative or Natixis Funds will also be happy to answer your questions or to provide any additional information that you may require.Information about the Funds, including its reports and SAI, can be reviewed and copied at the Public Reference Room of the SEC in Washington, D.C. Text-only copies of the Funds’ reports and SAI are available free from the EDGAR Database on the SEC’s Internet site at: www.sec.gov. Copies of this information may also be obtained, after paying a duplicating fee, by electronic request at the following e-mail address: publicinfo@sec.gov, or by writing the SEC’s Public Reference Section, Washington, D.C. 20549-1520.Information on the operation of the Public Reference Room may be obtained by calling the SEC at 1-202-551-8090.Portfolio Holdings—A description of the Funds’ policies and procedures with respect to the disclosure of each Fund’s portfolio securities is available in the SAI.

Investment Company Act File No. 811-00242
Investment Company Act File No. 811-22099
YA51-0511